                                                                               
      **********************************************************************   
      *                                                                    *   
      *                   I E R S   B U L L E T I N - A                    *   
      *                                                                    *   
      *           Rapid Service/Prediction of Earth Orientation            *   
      **********************************************************************   
      3 December 2020                                    Vol. XXXIII No. 049   
      ______________________________________________________________________   
      GENERAL INFORMATION:                                                     
         To receive this information electronically, contact:                  
            ser7@maia.usno.navy.mil or use                                     
            <http://maia.usno.navy.mil/docrequest.html>                        
         MJD = Julian Date - 2 400 000.5 days                                  
         UT2-UT1 = 0.022 sin(2*pi*T) - 0.012 cos(2*pi*T)                       
                                     - 0.006 sin(4*pi*T) + 0.007 cos(4*pi*T)   
            where pi = 3.14159265... and T is the date in Besselian years.     
         TT = TAI + 32.184 seconds                                             
         DUT1= (UT1-UTC) transmitted with time signals                         
             =  -0.2 seconds beginning 02 May 2019 at 0000 UTC                 
         Beginning 1 January 2017:                                             
            TAI-UTC = 37.000 000 seconds                                       
     ***********************************************************************
     *                                                                     *
     *             There will NOT be a leap second introduced              *
     *                       in UTC on 31 December 2020                    *
     *                                                                     *
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     *                                                                     *
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     *                                                                     *
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     *                                                                     *
     ***********************************************************************
     ________________________________________________________________________  
       The contributed observations used in the preparation of this Bulletin   
       are available at <http://www.usno.navy.mil/USNO/earth-orientation/      
       eo-info/general/input-data>. The contributed analysis results are based 
       on data from Very Long Baseline Interferometry (VLBI), Satellite Laser  
       Ranging (SLR), the Global Positioning System (GPS) satellites, Lunar    
       Laser Ranging (LLR), and meteorological predictions of variations in    
       Atmospheric Angular Momentum (AAM).                                     
     ________________________________________________________________________  
                                                                               
      COMBINED EARTH ORIENTATION PARAMETERS:                                   
                                                                               
                              IERS Rapid Service                               
              MJD      x    error     y    error   UT1-UTC   error             
                       "      "       "      "        s        s               
   20 11 27  59180 0.11876 .00009 0.28790 .00009 -0.179173 0.000016          
   20 11 28  59181 0.11618 .00009 0.28826 .00009 -0.179300 0.000014          
   20 11 29  59182 0.11341 .00009 0.28848 .00009 -0.179304 0.000013          
   20 11 30  59183 0.11073 .00009 0.28850 .00009 -0.179208 0.000012          
   20 12  1  59184 0.10832 .00009 0.28814 .00009 -0.179007 0.000016          
   20 12  2  59185 0.10629 .00009 0.28767 .00009 -0.178708 0.000019          
   20 12  3  59186 0.10456 .00009 0.28754 .00009 -0.178308 0.000018          
                                                                               
                              IERS Final Values                                
                               MJD        x        y      UT1-UTC              
                                          "        "         s                 
           20 10  2           59124    0.1927   0.3237  -0.17324       
           20 10  3           59125    0.1913   0.3229  -0.17310       
           20 10  4           59126    0.1904   0.3216  -0.17297       
           20 10  5           59127    0.1901   0.3201  -0.17279       
           20 10  6           59128    0.1896   0.3192  -0.17252       
           20 10  7           59129    0.1885   0.3185  -0.17209       
           20 10  8           59130    0.1872   0.3176  -0.17155       
           20 10  9           59131    0.1859   0.3163  -0.17094       
           20 10 10           59132    0.1846   0.3149  -0.17035       
           20 10 11           59133    0.1831   0.3138  -0.16983       
           20 10 12           59134    0.1814   0.3125  -0.16942       
           20 10 13           59135    0.1802   0.3113  -0.16929       
           20 10 14           59136    0.1790   0.3105  -0.16948       
           20 10 15           59137    0.1783   0.3096  -0.16995       
           20 10 16           59138    0.1779   0.3089  -0.17064       
           20 10 17           59139    0.1777   0.3082  -0.17145       
           20 10 18           59140    0.1779   0.3074  -0.17221       
           20 10 19           59141    0.1772   0.3066  -0.17274       
           20 10 20           59142    0.1758   0.3056  -0.17301       
           20 10 21           59143    0.1744   0.3047  -0.17311       
           20 10 22           59144    0.1732   0.3040  -0.17311       
           20 10 23           59145    0.1722   0.3031  -0.17311       
           20 10 24           59146    0.1710   0.3024  -0.17319       
           20 10 25           59147    0.1696   0.3015  -0.17332       
           20 10 26           59148    0.1682   0.3006  -0.17351       
           20 10 27           59149    0.1671   0.2998  -0.17377       
           20 10 28           59150    0.1653   0.2993  -0.17410       
           20 10 29           59151    0.1637   0.2984  -0.17446       
           20 10 30           59152    0.1622   0.2983  -0.17474       
           20 10 31           59153    0.1605   0.2977  -0.17507       
           20 11  1           59154    0.1585   0.2971  -0.17532       
                                                                               
      _______________________________________________________________________  
                                                                               
      PREDICTIONS:                                                             
      The following formulas will not reproduce the predictions given below,   
      but may be used to extend the predictions beyond the end of this table.  
                                                                               
      x =  0.1188 - 0.0224 cos A - 0.0972 sin A + 0.0123 cos C + 0.0155 sin C  
      y =  0.3605 - 0.0891 cos A + 0.0201 sin A + 0.0155 cos C - 0.0123 sin C  
         UT1-UTC = -0.1707 + 0.00003 (MJD - 59194) - (UT2-UT1)                 
                                                                               
      where A = 2*pi*(MJD-59186)/365.25 and C = 2*pi*(MJD-59186)/435.          
                                                                               
         TAI-UTC(MJD 59187) = 37.0                                             
      The accuracy may be estimated from the expressions:                      
      S x,y = 0.00068 (MJD-59186)**0.80   S t = 0.00025 (MJD-59186)**0.75      
      Estimated accuracies are:  Predictions     10 d   20 d   30 d   40 d     
                                 Polar coord's  0.004  0.007  0.010  0.013     
                                 UT1-UTC        0.0014 0.0024 0.0032 0.0040    
                                                                               
                    MJD      x(arcsec)   y(arcsec)   UT1-UTC(sec)              
       2020 12  4  59187       0.1030      0.2876     -0.17787         
       2020 12  5  59188       0.1016      0.2880     -0.17752         
       2020 12  6  59189       0.1002      0.2884     -0.17732         
       2020 12  7  59190       0.0987      0.2890     -0.17732         
       2020 12  8  59191       0.0972      0.2895     -0.17756         
       2020 12  9  59192       0.0956      0.2899     -0.17801         
       2020 12 10  59193       0.0940      0.2903     -0.17858         
       2020 12 11  59194       0.0924      0.2907     -0.17917         
       2020 12 12  59195       0.0909      0.2912     -0.17967         
       2020 12 13  59196       0.0893      0.2916     -0.17997         
       2020 12 14  59197       0.0877      0.2921     -0.18003         
       2020 12 15  59198       0.0862      0.2926     -0.17985         
       2020 12 16  59199       0.0847      0.2930     -0.17953         
       2020 12 17  59200       0.0834      0.2935     -0.17917         
       2020 12 18  59201       0.0821      0.2940     -0.17884         
       2020 12 19  59202       0.0809      0.2946     -0.17862         
       2020 12 20  59203       0.0798      0.2952     -0.17852         
       2020 12 21  59204       0.0786      0.2960     -0.17852         
       2020 12 22  59205       0.0774      0.2968     -0.17856         
       2020 12 23  59206       0.0762      0.2976     -0.17862         
       2020 12 24  59207       0.0749      0.2984     -0.17866         
       2020 12 25  59208       0.0736      0.2991     -0.17864         
       2020 12 26  59209       0.0724      0.2999     -0.17851         
       2020 12 27  59210       0.0711      0.3006     -0.17825         
       2020 12 28  59211       0.0699      0.3014     -0.17787         
       2020 12 29  59212       0.0688      0.3022     -0.17735         
       2020 12 30  59213       0.0676      0.3031     -0.17676         
       2020 12 31  59214       0.0665      0.3039     -0.17616         
       2021  1  1  59215       0.0654      0.3048     -0.17561         
       2021  1  2  59216       0.0643      0.3058     -0.17520         
       2021  1  3  59217       0.0632      0.3067     -0.17499         
       2021  1  4  59218       0.0621      0.3077     -0.17501         
       2021  1  5  59219       0.0610      0.3087     -0.17525         
       2021  1  6  59220       0.0599      0.3097     -0.17564         
       2021  1  7  59221       0.0589      0.3107     -0.17608         
       2021  1  8  59222       0.0578      0.3117     -0.17645         
       2021  1  9  59223       0.0568      0.3128     -0.17665         
       2021  1 10  59224       0.0557      0.3139     -0.17661         
       2021  1 11  59225       0.0547      0.3149     -0.17634         
       2021  1 12  59226       0.0537      0.3160     -0.17590         
       2021  1 13  59227       0.0528      0.3171     -0.17538         
       2021  1 14  59228       0.0519      0.3182     -0.17488         
       2021  1 15  59229       0.0510      0.3194     -0.17448         
       2021  1 16  59230       0.0501      0.3205     -0.17420         
       2021  1 17  59231       0.0492      0.3217     -0.17404         
       2021  1 18  59232       0.0483      0.3229     -0.17397         
       2021  1 19  59233       0.0475      0.3241     -0.17396         
       2021  1 20  59234       0.0467      0.3254     -0.17394         
       2021  1 21  59235       0.0459      0.3266     -0.17388         
       2021  1 22  59236       0.0451      0.3278     -0.17372         
       2021  1 23  59237       0.0444      0.3291     -0.17344         
       2021  1 24  59238       0.0436      0.3304     -0.17304         
       2021  1 25  59239       0.0429      0.3317     -0.17252         
       2021  1 26  59240       0.0423      0.3330     -0.17191         
       2021  1 27  59241       0.0416      0.3343     -0.17128         
       2021  1 28  59242       0.0410      0.3356     -0.17068         
       2021  1 29  59243       0.0404      0.3370     -0.17021         
       2021  1 30  59244       0.0398      0.3383     -0.16993         
       2021  1 31  59245       0.0393      0.3397     -0.16989         
       2021  2  1  59246       0.0388      0.3411     -0.17008         
       2021  2  2  59247       0.0383      0.3425     -0.17042         
       2021  2  3  59248       0.0378      0.3439     -0.17082         
       2021  2  4  59249       0.0374      0.3453     -0.17117         
       2021  2  5  59250       0.0369      0.3467     -0.17137         
       2021  2  6  59251       0.0366      0.3481     -0.17137         
       2021  2  7  59252       0.0362      0.3496     -0.17116         
       2021  2  8  59253       0.0359      0.3510     -0.17079         
       2021  2  9  59254       0.0355      0.3525     -0.17034         
       2021  2 10  59255       0.0353      0.3539     -0.16992         
       2021  2 11  59256       0.0350      0.3554     -0.16962         
       2021  2 12  59257       0.0348      0.3569     -0.16948         
       2021  2 13  59258       0.0346      0.3583     -0.16951         
       2021  2 14  59259       0.0344      0.3598     -0.16968         
       2021  2 15  59260       0.0343      0.3613     -0.16994         
       2021  2 16  59261       0.0341      0.3628     -0.17022         
       2021  2 17  59262       0.0340      0.3643     -0.17048         
       2021  2 18  59263       0.0340      0.3658     -0.17065         
       2021  2 19  59264       0.0340      0.3673     -0.17071         
       2021  2 20  59265       0.0339      0.3688     -0.17064         
       2021  2 21  59266       0.0340      0.3703     -0.17044         
       2021  2 22  59267       0.0340      0.3718     -0.17015         
       2021  2 23  59268       0.0341      0.3733     -0.16981         
       2021  2 24  59269       0.0342      0.3748     -0.16950         
       2021  2 25  59270       0.0343      0.3764     -0.16929         
       2021  2 26  59271       0.0345      0.3779     -0.16927         
       2021  2 27  59272       0.0347      0.3794     -0.16951         
       2021  2 28  59273       0.0349      0.3809     -0.17003         
       2021  3  1  59274       0.0352      0.3824     -0.17075         
       2021  3  2  59275       0.0354      0.3839     -0.17159         
       2021  3  3  59276       0.0358      0.3854     -0.17239         
       2021  3  4  59277       0.0361      0.3869     -0.17305         
       2021  3  5  59278       0.0365      0.3884     -0.17348         
       2021  3  6  59279       0.0368      0.3899     -0.17367         
       2021  3  7  59280       0.0373      0.3914     -0.17367         
       2021  3  8  59281       0.0377      0.3929     -0.17357         
       2021  3  9  59282       0.0382      0.3944     -0.17346         
       2021  3 10  59283       0.0387      0.3958     -0.17343         
       2021  3 11  59284       0.0392      0.3973     -0.17353         
       2021  3 12  59285       0.0398      0.3988     -0.17380         
       2021  3 13  59286       0.0404      0.4002     -0.17421         
       2021  3 14  59287       0.0410      0.4017     -0.17472         
       2021  3 15  59288       0.0416      0.4031     -0.17529         
       2021  3 16  59289       0.0423      0.4045     -0.17584         
       2021  3 17  59290       0.0430      0.4060     -0.17633         
       2021  3 18  59291       0.0437      0.4074     -0.17671         
       2021  3 19  59292       0.0445      0.4088     -0.17696         
       2021  3 20  59293       0.0453      0.4102     -0.17708         
       2021  3 21  59294       0.0461      0.4116     -0.17709         
       2021  3 22  59295       0.0469      0.4130     -0.17699         
       2021  3 23  59296       0.0478      0.4143     -0.17688         
       2021  3 24  59297       0.0486      0.4157     -0.17685         
       2021  3 25  59298       0.0496      0.4170     -0.17697         
       2021  3 26  59299       0.0505      0.4183     -0.17733         
       2021  3 27  59300       0.0515      0.4197     -0.17797         
       2021  3 28  59301       0.0524      0.4210     -0.17888         
       2021  3 29  59302       0.0535      0.4222     -0.17997         
       2021  3 30  59303       0.0545      0.4235     -0.18109         
       2021  3 31  59304       0.0556      0.4248     -0.18209         
       2021  4  1  59305       0.0566      0.4260     -0.18286         
       2021  4  2  59306       0.0578      0.4272     -0.18335         
       2021  4  3  59307       0.0589      0.4285     -0.18361         
       2021  4  4  59308       0.0600      0.4297     -0.18370         
       2021  4  5  59309       0.0612      0.4308     -0.18375         
       2021  4  6  59310       0.0624      0.4320     -0.18383         
       2021  4  7  59311       0.0637      0.4332     -0.18403         
       2021  4  8  59312       0.0649      0.4343     -0.18436         
       2021  4  9  59313       0.0662      0.4354     -0.18483         
       2021  4 10  59314       0.0675      0.4365     -0.18541         
       2021  4 11  59315       0.0688      0.4376     -0.18603         
       2021  4 12  59316       0.0701      0.4386     -0.18665         
       2021  4 13  59317       0.0715      0.4397     -0.18720         
       2021  4 14  59318       0.0728      0.4407     -0.18763         
       2021  4 15  59319       0.0742      0.4417     -0.18792         
       2021  4 16  59320       0.0757      0.4426     -0.18805         
       2021  4 17  59321       0.0771      0.4436     -0.18804         
       2021  4 18  59322       0.0785      0.4445     -0.18792         
       2021  4 19  59323       0.0800      0.4454     -0.18776         
       2021  4 20  59324       0.0815      0.4463     -0.18762         
       2021  4 21  59325       0.0830      0.4472     -0.18758         
       2021  4 22  59326       0.0845      0.4481     -0.18773         
       2021  4 23  59327       0.0861      0.4489     -0.18812         
       2021  4 24  59328       0.0876      0.4497     -0.18879         
       2021  4 25  59329       0.0892      0.4505     -0.18968         
       2021  4 26  59330       0.0908      0.4512     -0.19068         
       2021  4 27  59331       0.0924      0.4519     -0.19163         
       2021  4 28  59332       0.0940      0.4527     -0.19239         
       2021  4 29  59333       0.0957      0.4533     -0.19286         
       2021  4 30  59334       0.0973      0.4540     -0.19305         
       2021  5  1  59335       0.0990      0.4546     -0.19301         
       2021  5  2  59336       0.1007      0.4552     -0.19287         
       2021  5  3  59337       0.1023      0.4558     -0.19273         
       2021  5  4  59338       0.1040      0.4564     -0.19267         
       2021  5  5  59339       0.1057      0.4569     -0.19273         
       2021  5  6  59340       0.1075      0.4574     -0.19291         
       2021  5  7  59341       0.1092      0.4579     -0.19319         
       2021  5  8  59342       0.1109      0.4584     -0.19351         
       2021  5  9  59343       0.1127      0.4588     -0.19382         
       2021  5 10  59344       0.1145      0.4592     -0.19407         
       2021  5 11  59345       0.1162      0.4596     -0.19420         
       2021  5 12  59346       0.1180      0.4599     -0.19418         
       2021  5 13  59347       0.1198      0.4602     -0.19400         
       2021  5 14  59348       0.1216      0.4605     -0.19364         
       2021  5 15  59349       0.1234      0.4608     -0.19316         
       2021  5 16  59350       0.1252      0.4611     -0.19260         
       2021  5 17  59351       0.1270      0.4613     -0.19203         
       2021  5 18  59352       0.1288      0.4615     -0.19152         
       2021  5 19  59353       0.1307      0.4616     -0.19115         
       2021  5 20  59354       0.1325      0.4617     -0.19097         
       2021  5 21  59355       0.1343      0.4618     -0.19104         
       2021  5 22  59356       0.1361      0.4619     -0.19133         
       2021  5 23  59357       0.1380      0.4620     -0.19178         
       2021  5 24  59358       0.1398      0.4620     -0.19226         
       2021  5 25  59359       0.1417      0.4620     -0.19262         
       2021  5 26  59360       0.1435      0.4619     -0.19273         
       2021  5 27  59361       0.1454      0.4619     -0.19254         
       2021  5 28  59362       0.1472      0.4618     -0.19209         
       2021  5 29  59363       0.1490      0.4617     -0.19148         
       2021  5 30  59364       0.1509      0.4615     -0.19081         
       2021  5 31  59365       0.1527      0.4613     -0.19018         
       2021  6  1  59366       0.1546      0.4611     -0.18966         
       2021  6  2  59367       0.1564      0.4609     -0.18925         
       2021  6  3  59368       0.1582      0.4606     -0.18891         
       2021  6  4  59369       0.1601      0.4603     -0.18859         
       2021  6  5  59370       0.1619      0.4600     -0.18824         
       2021  6  6  59371       0.1637      0.4597     -0.18779         
       2021  6  7  59372       0.1655      0.4593     -0.18720         
       2021  6  8  59373       0.1673      0.4589     -0.18642         
       2021  6  9  59374       0.1691      0.4585     -0.18544         
       2021  6 10  59375       0.1709      0.4580     -0.18427         
       2021  6 11  59376       0.1727      0.4575     -0.18294         
       2021  6 12  59377       0.1745      0.4570     -0.18151         
       2021  6 13  59378       0.1763      0.4565     -0.18005         
       2021  6 14  59379       0.1780      0.4559     -0.17867         
       2021  6 15  59380       0.1798      0.4553     -0.17742         
       2021  6 16  59381       0.1815      0.4547     -0.17639         
       2021  6 17  59382       0.1833      0.4540     -0.17562         
       2021  6 18  59383       0.1850      0.4533     -0.17511         
       2021  6 19  59384       0.1867      0.4526     -0.17483         
       2021  6 20  59385       0.1884      0.4519     -0.17468         
       2021  6 21  59386       0.1901      0.4511     -0.17455         
       2021  6 22  59387       0.1918      0.4503     -0.17430         
       2021  6 23  59388       0.1934      0.4495     -0.17385         
       2021  6 24  59389       0.1951      0.4487     -0.17320         
       2021  6 25  59390       0.1967      0.4478     -0.17242         
       2021  6 26  59391       0.1983      0.4469     -0.17160         
       2021  6 27  59392       0.1999      0.4460     -0.17087         
       2021  6 28  59393       0.2015      0.4451     -0.17028         
       2021  6 29  59394       0.2031      0.4441     -0.16986         
       2021  6 30  59395       0.2047      0.4431     -0.16959         
       2021  7  1  59396       0.2062      0.4421     -0.16940         
       2021  7  2  59397       0.2077      0.4411     -0.16925         
       2021  7  3  59398       0.2092      0.4400     -0.16906         
       2021  7  4  59399       0.2107      0.4389     -0.16879         
       2021  7  5  59400       0.2122      0.4378     -0.16839         
       2021  7  6  59401       0.2136      0.4367     -0.16784         
       2021  7  7  59402       0.2150      0.4355     -0.16711         
       2021  7  8  59403       0.2165      0.4343     -0.16621         
       2021  7  9  59404       0.2178      0.4331     -0.16518         
       2021  7 10  59405       0.2192      0.4319     -0.16412         
       2021  7 11  59406       0.2206      0.4307     -0.16313         
       2021  7 12  59407       0.2219      0.4294     -0.16228         
       2021  7 13  59408       0.2232      0.4281     -0.16160         
       2021  7 14  59409       0.2244      0.4268     -0.16113         
       2021  7 15  59410       0.2257      0.4255     -0.16087         
       2021  7 16  59411       0.2269      0.4241     -0.16069         
       2021  7 17  59412       0.2281      0.4227     -0.16058         
       2021  7 18  59413       0.2293      0.4214     -0.16044         
       2021  7 19  59414       0.2305      0.4200     -0.16010         
       2021  7 20  59415       0.2316      0.4185     -0.15955         
       2021  7 21  59416       0.2327      0.4171     -0.15882         
       2021  7 22  59417       0.2338      0.4156     -0.15789         
       2021  7 23  59418       0.2349      0.4141     -0.15685         
       2021  7 24  59419       0.2359      0.4126     -0.15580         
       2021  7 25  59420       0.2369      0.4111     -0.15486         
       2021  7 26  59421       0.2379      0.4096     -0.15409         
       2021  7 27  59422       0.2388      0.4081     -0.15346         
       2021  7 28  59423       0.2397      0.4065     -0.15287         
       2021  7 29  59424       0.2406      0.4049     -0.15228         
       2021  7 30  59425       0.2415      0.4033     -0.15166         
       2021  7 31  59426       0.2423      0.4017     -0.15095         
       2021  8  1  59427       0.2432      0.4001     -0.15011         
       2021  8  2  59428       0.2439      0.3985     -0.14910         
       2021  8  3  59429       0.2447      0.3968     -0.14795         
       2021  8  4  59430       0.2454      0.3952     -0.14674         
       2021  8  5  59431       0.2461      0.3935     -0.14547         
       2021  8  6  59432       0.2468      0.3918     -0.14415         
       2021  8  7  59433       0.2474      0.3901     -0.14285         
       2021  8  8  59434       0.2480      0.3884     -0.14168         
       2021  8  9  59435       0.2486      0.3867     -0.14079         
       2021  8 10  59436       0.2491      0.3850     -0.14024         
       2021  8 11  59437       0.2496      0.3833     -0.14002         
       2021  8 12  59438       0.2501      0.3815     -0.14002         
       2021  8 13  59439       0.2505      0.3798     -0.14017         
       2021  8 14  59440       0.2510      0.3780     -0.14034         
       2021  8 15  59441       0.2513      0.3763     -0.14037         
       2021  8 16  59442       0.2517      0.3745     -0.14020         
       2021  8 17  59443       0.2520      0.3727     -0.13979         
       2021  8 18  59444       0.2523      0.3709     -0.13916         
       2021  8 19  59445       0.2526      0.3691     -0.13838         
       2021  8 20  59446       0.2528      0.3673     -0.13757         
       2021  8 21  59447       0.2530      0.3656     -0.13680         
       2021  8 22  59448       0.2531      0.3637     -0.13619         
       2021  8 23  59449       0.2533      0.3619     -0.13573         
       2021  8 24  59450       0.2534      0.3601     -0.13537         
       2021  8 25  59451       0.2534      0.3583     -0.13505         
       2021  8 26  59452       0.2535      0.3565     -0.13476         
       2021  8 27  59453       0.2535      0.3547     -0.13438         
       2021  8 28  59454       0.2534      0.3529     -0.13387         
       2021  8 29  59455       0.2533      0.3511     -0.13324         
       2021  8 30  59456       0.2532      0.3493     -0.13248         
       2021  8 31  59457       0.2531      0.3474     -0.13163         
       2021  9  1  59458       0.2529      0.3456     -0.13066         
       2021  9  2  59459       0.2527      0.3438     -0.12969         
       2021  9  3  59460       0.2525      0.3420     -0.12883         
       2021  9  4  59461       0.2523      0.3402     -0.12811         
       2021  9  5  59462       0.2520      0.3384     -0.12763         
       2021  9  6  59463       0.2516      0.3366     -0.12746         
       2021  9  7  59464       0.2513      0.3348     -0.12758         
       2021  9  8  59465       0.2509      0.3330     -0.12793         
       2021  9  9  59466       0.2504      0.3312     -0.12848         
       2021  9 10  59467       0.2500      0.3295     -0.12907         
       2021  9 11  59468       0.2495      0.3277     -0.12957         
       2021  9 12  59469       0.2490      0.3259     -0.12994         
       2021  9 13  59470       0.2484      0.3242     -0.13012         
       2021  9 14  59471       0.2478      0.3224     -0.13006         
       2021  9 15  59472       0.2472      0.3207     -0.12988         
       2021  9 16  59473       0.2465      0.3189     -0.12972         
       2021  9 17  59474       0.2459      0.3172     -0.12969         
       2021  9 18  59475       0.2452      0.3155     -0.12979         
       2021  9 19  59476       0.2444      0.3138     -0.13007         
       2021  9 20  59477       0.2436      0.3121     -0.13052         
       2021  9 21  59478       0.2428      0.3104     -0.13106         
       2021  9 22  59479       0.2420      0.3088     -0.13166         
       2021  9 23  59480       0.2411      0.3071     -0.13223         
       2021  9 24  59481       0.2402      0.3054     -0.13268         
       2021  9 25  59482       0.2393      0.3038     -0.13299         
       2021  9 26  59483       0.2383      0.3022     -0.13315         
       2021  9 27  59484       0.2373      0.3006     -0.13317         
       2021  9 28  59485       0.2363      0.2990     -0.13310         
       2021  9 29  59486       0.2353      0.2974     -0.13301         
       2021  9 30  59487       0.2342      0.2959     -0.13291         
       2021 10  1  59488       0.2331      0.2943     -0.13278         
       2021 10  2  59489       0.2320      0.2928     -0.13267         
       2021 10  3  59490       0.2308      0.2913     -0.13275         
       2021 10  4  59491       0.2296      0.2898     -0.13307         
       2021 10  5  59492       0.2284      0.2883     -0.13362         
       2021 10  6  59493       0.2272      0.2869     -0.13438         
       2021 10  7  59494       0.2259      0.2854     -0.13523         
       2021 10  8  59495       0.2246      0.2840     -0.13601         
       2021 10  9  59496       0.2233      0.2826     -0.13667         
       2021 10 10  59497       0.2220      0.2812     -0.13713         
       2021 10 11  59498       0.2206      0.2799     -0.13740         
       2021 10 12  59499       0.2192      0.2785     -0.13750         
       2021 10 13  59500       0.2178      0.2772     -0.13751         
       2021 10 14  59501       0.2163      0.2759     -0.13753         
       2021 10 15  59502       0.2149      0.2746     -0.13769         
       2021 10 16  59503       0.2134      0.2734     -0.13809         
       2021 10 17  59504       0.2119      0.2721     -0.13870         
       2021 10 18  59505       0.2103      0.2709     -0.13945         
       2021 10 19  59506       0.2088      0.2697     -0.14030         
       2021 10 20  59507       0.2072      0.2686     -0.14119         
       2021 10 21  59508       0.2056      0.2674     -0.14202         
       2021 10 22  59509       0.2040      0.2663     -0.14280         
       2021 10 23  59510       0.2023      0.2652     -0.14346         
       2021 10 24  59511       0.2007      0.2642     -0.14406         
       2021 10 25  59512       0.1990      0.2631     -0.14455         
       2021 10 26  59513       0.1973      0.2621     -0.14494         
       2021 10 27  59514       0.1956      0.2611     -0.14530         
       2021 10 28  59515       0.1938      0.2602     -0.14569         
       2021 10 29  59516       0.1921      0.2592     -0.14615         
       2021 10 30  59517       0.1903      0.2583     -0.14681         
       2021 10 31  59518       0.1885      0.2574     -0.14772         
       2021 11  1  59519       0.1867      0.2566     -0.14893         
       2021 11  2  59520       0.1849      0.2558     -0.15039         
       2021 11  3  59521       0.1830      0.2550     -0.15198         
       2021 11  4  59522       0.1812      0.2542     -0.15354         
       2021 11  5  59523       0.1793      0.2535     -0.15490         
       2021 11  6  59524       0.1774      0.2527     -0.15587         
       2021 11  7  59525       0.1755      0.2521     -0.15647         
       2021 11  8  59526       0.1736      0.2514     -0.15677         
       2021 11  9  59527       0.1717      0.2508     -0.15689         
       2021 11 10  59528       0.1698      0.2502     -0.15697         
       2021 11 11  59529       0.1679      0.2496     -0.15709         
       2021 11 12  59530       0.1659      0.2491     -0.15730         
       2021 11 13  59531       0.1639      0.2486     -0.15766         
       2021 11 14  59532       0.1620      0.2481     -0.15818         
       2021 11 15  59533       0.1600      0.2476     -0.15879         
       2021 11 16  59534       0.1580      0.2472     -0.15944         
       2021 11 17  59535       0.1560      0.2468     -0.16016         
       2021 11 18  59536       0.1540      0.2465     -0.16085         
       2021 11 19  59537       0.1520      0.2462     -0.16135         
       2021 11 20  59538       0.1500      0.2459     -0.16171         
       2021 11 21  59539       0.1479      0.2456     -0.16196         
       2021 11 22  59540       0.1459      0.2454     -0.16208         
       2021 11 23  59541       0.1439      0.2452     -0.16213         
       2021 11 24  59542       0.1418      0.2450     -0.16215         
       2021 11 25  59543       0.1398      0.2449     -0.16223         
       2021 11 26  59544       0.1378      0.2448     -0.16243         
       2021 11 27  59545       0.1357      0.2447     -0.16281         
       2021 11 28  59546       0.1337      0.2447     -0.16337         
       2021 11 29  59547       0.1316      0.2447     -0.16415         
       2021 11 30  59548       0.1296      0.2447     -0.16508         
       2021 12  1  59549       0.1275      0.2447     -0.16606         
       2021 12  2  59550       0.1255      0.2448     -0.16693         
       2021 12  3  59551       0.1234      0.2449     -0.16755         
      These predictions are based on all announced leap seconds.               
                                                                               
      CELESTIAL POLE OFFSET SERIES:                                            
                           NEOS Celestial Pole Offset Series                   
                       MJD      dpsi    error     deps    error                
                                        (msec. of arc)                         
                      59160  -113.11    0.31   -7.94    0.10   
                      59161  -112.69    0.59   -7.73    0.07   
                      59162  -112.26    0.59   -7.44    0.07   
                      59163  -112.03    0.71   -7.22    0.01   
                      59164  -112.01    0.71   -7.04    0.01   
                      59165  -112.20    0.71   -6.85    0.01   
                      59166  -112.56    0.71   -6.74    0.01   
                      59167  -112.92    0.32   -6.87    0.16   
                      59168  -113.00    0.18   -7.13    0.08   
                      59169  -112.76    0.18   -7.21    0.08   
                      59170  -112.48    0.18   -7.02    0.08   
                                                                               
                     IERS Celestial Pole Offset Final Series                   
                           MJD          dpsi      deps                         
                                        (msec. of arc)                         
                          59124      -116.5      -8.8                      
                          59125      -116.4      -8.7                      
                          59126      -116.3      -8.8                      
                          59127      -116.1      -8.9                      
                          59128      -116.0      -9.0                      
                          59129      -116.1      -9.1                      
                          59130      -116.4      -9.3                      
                          59131      -116.6      -9.5                      
                          59132      -116.5      -9.4                      
                          59133      -115.9      -9.2                      
                          59134      -115.4      -8.9                      
                          59135      -115.1      -8.7                      
                          59136      -115.1      -8.4                      
                          59137      -115.1      -8.1                      
                          59138      -115.4      -8.0                      
                          59139      -115.6      -8.2                      
                          59140      -115.6      -8.5                      
                          59141      -115.4      -8.6                      
                          59142      -115.3      -8.5                      
                          59143      -115.1      -8.3                      
                          59144      -115.1      -8.4                      
                          59145      -115.1      -8.6                      
                          59146      -115.2      -8.6                      
                          59147      -115.1      -8.5                      
                          59148      -115.0      -8.3                      
                          59149      -114.7      -8.2                      
                          59150      -114.5      -8.1                      
                          59151      -114.4      -7.9                      
                          59152      -114.3      -7.6                      
                          59153      -114.2      -7.5                      
                          59154      -114.0      -7.5                      
                                                            
                     IAU2000A Celestial Pole Offset Series  
                      MJD      dX     error     dY     error
                                    (msec. of arc)          
                      59160    0.196  0.125    0.049   0.102          
                      59161    0.205  0.234    0.043   0.066          
                      59162    0.213  0.234    0.036   0.066          
                      59163    0.215  0.284    0.028   0.005          
                      59164    0.209  0.284    0.021   0.005          
                      59165    0.194  0.284    0.015   0.005          
                      59166    0.171  0.284    0.009   0.005          
                      59167    0.143  0.128    0.004   0.160          
                      59168    0.109  0.071   -0.001   0.081          
                      59169    0.072  0.071   -0.006   0.081          
                      59170    0.034  0.071   -0.010   0.081          
                                                                               
                                                                               
                 IAU2000A Celestial Pole Offset Final Series 
                             MJD     dX         dY           
                             (msec. of arc)          
                           59124     0.15      -0.06
                           59125     0.14      -0.06
                           59126     0.12      -0.04
                           59127     0.10      -0.02
                           59128     0.07       0.00
                           59129     0.07       0.00
                           59130     0.08      -0.00
                           59131     0.08      -0.01
                           59132     0.08      -0.02
                           59133     0.08      -0.04
                           59134     0.08      -0.05
                           59135     0.07      -0.07
                           59136     0.07      -0.08
                           59137     0.07      -0.04
                           59138     0.07       0.02
                           59139     0.04       0.03
                           59140     0.01       0.02
                           59141    -0.02       0.01
                           59142    -0.05      -0.00
                           59143     0.00       0.00
                           59144     0.00       0.00
                           59145     0.00       0.00
                           59146     0.00       0.00
                           59147     0.00       0.00
                           59148     0.00       0.00
                           59149     0.00       0.00
                           59150     0.00       0.00
                           59151     0.00       0.00
                           59152     0.00       0.00
                           59153     0.00       0.00
                           59154     0.00       0.00
                                                                               
    The recommended software to predict celestial pole offsets can be found at 
    <http://www.usno.navy.mil/USNO/earth-orientation/software/aux/ceppred.f>   
    and software for the calculation of the dX and dY components with          
    respect to IAU2000A Nutation/Precession Theory can be found at the         
    <http://maia.usno.navy.mil/conv2010/conventions.html>                      
    web site in Chapter 5 Section 5.5 of the IERS Conventions (2010).          
