                                                                               
      **********************************************************************   
      *                                                                    *   
      *                   I E R S   B U L L E T I N - A                    *   
      *                                                                    *   
      *           Rapid Service/Prediction of Earth Orientation            *   
      **********************************************************************   
      17 December 2020                                   Vol. XXXIII No. 051   
      ______________________________________________________________________   
      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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     * should note that the paragraph above supercedes any information     *
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     *                                                                     *
     * Until 31 Oct 2020, updated EOPs may be available at NASA's Archive  *
     * of Space Geodesy Data anonymous FTP server at:                      *
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     *                                                                     *
     * In addition, updated EOPs may be available at IERS:                 *
     *   https://datacenter.iers.org/eop.php                               *
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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 12 11  59194 0.09037 .00009 0.28945 .00009 -0.179727 0.000016          
   20 12 12  59195 0.08928 .00009 0.29004 .00009 -0.180174 0.000017          
   20 12 13  59196 0.08808 .00009 0.29107 .00009 -0.180399 0.000015          
   20 12 14  59197 0.08673 .00009 0.29207 .00009 -0.180381 0.000012          
   20 12 15  59198 0.08540 .00009 0.29281 .00009 -0.180124 0.000012          
   20 12 16  59199 0.08413 .00009 0.29336 .00009 -0.179678 0.000011          
   20 12 17  59200 0.08296 .00009 0.29399 .00009 -0.179164 0.000055          
                                                                               
      _______________________________________________________________________  
                                                                               
      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 =  0.1202 - 0.0456 cos A - 0.0947 sin A + 0.0125 cos C + 0.0174 sin C  
      y =  0.3642 - 0.0865 cos A + 0.0407 sin A + 0.0174 cos C - 0.0125 sin C  
         UT1-UTC = -0.1696 + 0.00005 (MJD - 59208) - (UT2-UT1)                 
                                                                               
      where A = 2*pi*(MJD-59200)/365.25 and C = 2*pi*(MJD-59200)/435.          
                                                                               
         TAI-UTC(MJD 59201) = 37.0                                             
      The accuracy may be estimated from the expressions:                      
      S x,y = 0.00068 (MJD-59200)**0.80   S t = 0.00025 (MJD-59200)**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 18  59201       0.0818      0.2946     -0.17876         
       2020 12 19  59202       0.0807      0.2953     -0.17850         
       2020 12 20  59203       0.0797      0.2962     -0.17837         
       2020 12 21  59204       0.0786      0.2971     -0.17835         
       2020 12 22  59205       0.0774      0.2980     -0.17841         
       2020 12 23  59206       0.0762      0.2988     -0.17851         
       2020 12 24  59207       0.0749      0.2996     -0.17858         
       2020 12 25  59208       0.0737      0.3003     -0.17859         
       2020 12 26  59209       0.0725      0.3011     -0.17848         
       2020 12 27  59210       0.0714      0.3018     -0.17825         
       2020 12 28  59211       0.0704      0.3027     -0.17788         
       2020 12 29  59212       0.0694      0.3036     -0.17736         
       2020 12 30  59213       0.0683      0.3045     -0.17673         
       2020 12 31  59214       0.0672      0.3055     -0.17608         
       2021  1  1  59215       0.0660      0.3065     -0.17548         
       2021  1  2  59216       0.0648      0.3073     -0.17503         
       2021  1  3  59217       0.0637      0.3082     -0.17481         
       2021  1  4  59218       0.0626      0.3091     -0.17483         
       2021  1  5  59219       0.0616      0.3100     -0.17507         
       2021  1  6  59220       0.0605      0.3109     -0.17546         
       2021  1  7  59221       0.0595      0.3119     -0.17590         
       2021  1  8  59222       0.0584      0.3129     -0.17627         
       2021  1  9  59223       0.0574      0.3139     -0.17648         
       2021  1 10  59224       0.0563      0.3149     -0.17647         
       2021  1 11  59225       0.0553      0.3159     -0.17624         
       2021  1 12  59226       0.0544      0.3170     -0.17583         
       2021  1 13  59227       0.0534      0.3180     -0.17535         
       2021  1 14  59228       0.0525      0.3191     -0.17490         
       2021  1 15  59229       0.0516      0.3202     -0.17456         
       2021  1 16  59230       0.0507      0.3214     -0.17436         
       2021  1 17  59231       0.0499      0.3225     -0.17429         
       2021  1 18  59232       0.0490      0.3237     -0.17432         
       2021  1 19  59233       0.0481      0.3248     -0.17440         
       2021  1 20  59234       0.0473      0.3260     -0.17448         
       2021  1 21  59235       0.0466      0.3272     -0.17452         
       2021  1 22  59236       0.0458      0.3284     -0.17446         
       2021  1 23  59237       0.0451      0.3296     -0.17428         
       2021  1 24  59238       0.0444      0.3309     -0.17397         
       2021  1 25  59239       0.0437      0.3322     -0.17355         
       2021  1 26  59240       0.0430      0.3335     -0.17305         
       2021  1 27  59241       0.0424      0.3348     -0.17254         
       2021  1 28  59242       0.0418      0.3361     -0.17207         
       2021  1 29  59243       0.0412      0.3374     -0.17172         
       2021  1 30  59244       0.0406      0.3387     -0.17158         
       2021  1 31  59245       0.0401      0.3401     -0.17166         
       2021  2  1  59246       0.0396      0.3414     -0.17196         
       2021  2  2  59247       0.0391      0.3428     -0.17242         
       2021  2  3  59248       0.0386      0.3442     -0.17292         
       2021  2  4  59249       0.0382      0.3456     -0.17336         
       2021  2  5  59250       0.0378      0.3470     -0.17363         
       2021  2  6  59251       0.0374      0.3484     -0.17369         
       2021  2  7  59252       0.0371      0.3498     -0.17352         
       2021  2  8  59253       0.0367      0.3512     -0.17318         
       2021  2  9  59254       0.0364      0.3526     -0.17276         
       2021  2 10  59255       0.0362      0.3541     -0.17237         
       2021  2 11  59256       0.0359      0.3555     -0.17208         
       2021  2 12  59257       0.0357      0.3570     -0.17193         
       2021  2 13  59258       0.0355      0.3584     -0.17194         
       2021  2 14  59259       0.0353      0.3599     -0.17208         
       2021  2 15  59260       0.0352      0.3613     -0.17230         
       2021  2 16  59261       0.0351      0.3628     -0.17254         
       2021  2 17  59262       0.0350      0.3643     -0.17274         
       2021  2 18  59263       0.0350      0.3658     -0.17286         
       2021  2 19  59264       0.0349      0.3672     -0.17285         
       2021  2 20  59265       0.0349      0.3687     -0.17271         
       2021  2 21  59266       0.0350      0.3702     -0.17244         
       2021  2 22  59267       0.0350      0.3717     -0.17206         
       2021  2 23  59268       0.0351      0.3732     -0.17163         
       2021  2 24  59269       0.0352      0.3747     -0.17123         
       2021  2 25  59270       0.0354      0.3762     -0.17094         
       2021  2 26  59271       0.0356      0.3777     -0.17085         
       2021  2 27  59272       0.0358      0.3792     -0.17102         
       2021  2 28  59273       0.0360      0.3806     -0.17146         
       2021  3  1  59274       0.0362      0.3821     -0.17212         
       2021  3  2  59275       0.0365      0.3836     -0.17289         
       2021  3  3  59276       0.0368      0.3851     -0.17364         
       2021  3  4  59277       0.0372      0.3866     -0.17424         
       2021  3  5  59278       0.0375      0.3881     -0.17464         
       2021  3  6  59279       0.0379      0.3895     -0.17480         
       2021  3  7  59280       0.0384      0.3910     -0.17479         
       2021  3  8  59281       0.0388      0.3925     -0.17468         
       2021  3  9  59282       0.0393      0.3939     -0.17456         
       2021  3 10  59283       0.0398      0.3954     -0.17452         
       2021  3 11  59284       0.0404      0.3968     -0.17462         
       2021  3 12  59285       0.0409      0.3983     -0.17487         
       2021  3 13  59286       0.0415      0.3997     -0.17526         
       2021  3 14  59287       0.0421      0.4012     -0.17576         
       2021  3 15  59288       0.0428      0.4026     -0.17629         
       2021  3 16  59289       0.0435      0.4040     -0.17681         
       2021  3 17  59290       0.0442      0.4054     -0.17725         
       2021  3 18  59291       0.0449      0.4068     -0.17757         
       2021  3 19  59292       0.0457      0.4082     -0.17775         
       2021  3 20  59293       0.0464      0.4096     -0.17779         
       2021  3 21  59294       0.0473      0.4109     -0.17771         
       2021  3 22  59295       0.0481      0.4123     -0.17756         
       2021  3 23  59296       0.0490      0.4137     -0.17740         
       2021  3 24  59297       0.0498      0.4150     -0.17731         
       2021  3 25  59298       0.0508      0.4163     -0.17738         
       2021  3 26  59299       0.0517      0.4176     -0.17768         
       2021  3 27  59300       0.0527      0.4189     -0.17827         
       2021  3 28  59301       0.0537      0.4202     -0.17913         
       2021  3 29  59302       0.0547      0.4215     -0.18016         
       2021  3 30  59303       0.0557      0.4228     -0.18122         
       2021  3 31  59304       0.0568      0.4240     -0.18217         
       2021  4  1  59305       0.0579      0.4252     -0.18288         
       2021  4  2  59306       0.0590      0.4264     -0.18332         
       2021  4  3  59307       0.0601      0.4276     -0.18351         
       2021  4  4  59308       0.0613      0.4288     -0.18355         
       2021  4  5  59309       0.0625      0.4300     -0.18353         
       2021  4  6  59310       0.0637      0.4311     -0.18355         
       2021  4  7  59311       0.0649      0.4323     -0.18368         
       2021  4  8  59312       0.0661      0.4334     -0.18395         
       2021  4  9  59313       0.0674      0.4345     -0.18435         
       2021  4 10  59314       0.0687      0.4356     -0.18486         
       2021  4 11  59315       0.0700      0.4366     -0.18542         
       2021  4 12  59316       0.0714      0.4377     -0.18597         
       2021  4 13  59317       0.0727      0.4387     -0.18645         
       2021  4 14  59318       0.0741      0.4397     -0.18682         
       2021  4 15  59319       0.0755      0.4407     -0.18704         
       2021  4 16  59320       0.0769      0.4417     -0.18711         
       2021  4 17  59321       0.0783      0.4426     -0.18704         
       2021  4 18  59322       0.0798      0.4435     -0.18686         
       2021  4 19  59323       0.0813      0.4444     -0.18664         
       2021  4 20  59324       0.0827      0.4453     -0.18644         
       2021  4 21  59325       0.0843      0.4462     -0.18635         
       2021  4 22  59326       0.0858      0.4470     -0.18645         
       2021  4 23  59327       0.0873      0.4478     -0.18679         
       2021  4 24  59328       0.0889      0.4486     -0.18741         
       2021  4 25  59329       0.0904      0.4494     -0.18825         
       2021  4 26  59330       0.0920      0.4501     -0.18921         
       2021  4 27  59331       0.0936      0.4508     -0.19011         
       2021  4 28  59332       0.0953      0.4515     -0.19083         
       2021  4 29  59333       0.0969      0.4522     -0.19126         
       2021  4 30  59334       0.0985      0.4529     -0.19141         
       2021  5  1  59335       0.1002      0.4535     -0.19134         
       2021  5  2  59336       0.1019      0.4541     -0.19116         
       2021  5  3  59337       0.1035      0.4547     -0.19098         
       2021  5  4  59338       0.1052      0.4552     -0.19089         
       2021  5  5  59339       0.1069      0.4558     -0.19092         
       2021  5  6  59340       0.1087      0.4563     -0.19106         
       2021  5  7  59341       0.1104      0.4567     -0.19130         
       2021  5  8  59342       0.1121      0.4572     -0.19159         
       2021  5  9  59343       0.1139      0.4576     -0.19187         
       2021  5 10  59344       0.1156      0.4580     -0.19208         
       2021  5 11  59345       0.1174      0.4584     -0.19219         
       2021  5 12  59346       0.1192      0.4587     -0.19214         
       2021  5 13  59347       0.1209      0.4590     -0.19192         
       2021  5 14  59348       0.1227      0.4593     -0.19155         
       2021  5 15  59349       0.1245      0.4596     -0.19104         
       2021  5 16  59350       0.1263      0.4598     -0.19045         
       2021  5 17  59351       0.1281      0.4600     -0.18986         
       2021  5 18  59352       0.1299      0.4602     -0.18933         
       2021  5 19  59353       0.1318      0.4604     -0.18893         
       2021  5 20  59354       0.1336      0.4605     -0.18874         
       2021  5 21  59355       0.1354      0.4606     -0.18878         
       2021  5 22  59356       0.1372      0.4607     -0.18906         
       2021  5 23  59357       0.1391      0.4607     -0.18949         
       2021  5 24  59358       0.1409      0.4607     -0.18996         
       2021  5 25  59359       0.1427      0.4607     -0.19030         
       2021  5 26  59360       0.1446      0.4607     -0.19041         
       2021  5 27  59361       0.1464      0.4606     -0.19022         
       2021  5 28  59362       0.1482      0.4605     -0.18977         
       2021  5 29  59363       0.1501      0.4604     -0.18916         
       2021  5 30  59364       0.1519      0.4602     -0.18851         
       2021  5 31  59365       0.1537      0.4601     -0.18792         
       2021  6  1  59366       0.1555      0.4599     -0.18745         
       2021  6  2  59367       0.1574      0.4596     -0.18709         
       2021  6  3  59368       0.1592      0.4594     -0.18683         
       2021  6  4  59369       0.1610      0.4591     -0.18662         
       2021  6  5  59370       0.1628      0.4587     -0.18640         
       2021  6  6  59371       0.1646      0.4584     -0.18611         
       2021  6  7  59372       0.1664      0.4580     -0.18572         
       2021  6  8  59373       0.1682      0.4576     -0.18517         
       2021  6  9  59374       0.1700      0.4572     -0.18444         
       2021  6 10  59375       0.1718      0.4567     -0.18355         
       2021  6 11  59376       0.1736      0.4562     -0.18250         
       2021  6 12  59377       0.1753      0.4557     -0.18135         
       2021  6 13  59378       0.1771      0.4552     -0.18015         
       2021  6 14  59379       0.1789      0.4546     -0.17899         
       2021  6 15  59380       0.1806      0.4540     -0.17792         
       2021  6 16  59381       0.1823      0.4534     -0.17700         
       2021  6 17  59382       0.1841      0.4527     -0.17627         
       2021  6 18  59383       0.1858      0.4521     -0.17573         
       2021  6 19  59384       0.1875      0.4514     -0.17531         
       2021  6 20  59385       0.1892      0.4506     -0.17494         
       2021  6 21  59386       0.1908      0.4499     -0.17447         
       2021  6 22  59387       0.1925      0.4491     -0.17380         
       2021  6 23  59388       0.1941      0.4483     -0.17284         
       2021  6 24  59389       0.1958      0.4474     -0.17159         
       2021  6 25  59390       0.1974      0.4466     -0.17014         
       2021  6 26  59391       0.1990      0.4457     -0.16861         
       2021  6 27  59392       0.2006      0.4448     -0.16714         
       2021  6 28  59393       0.2022      0.4438     -0.16581         
       2021  6 29  59394       0.2037      0.4429     -0.16464         
       2021  6 30  59395       0.2053      0.4419     -0.16362         
       2021  7  1  59396       0.2068      0.4409     -0.16270         
       2021  7  2  59397       0.2083      0.4399     -0.16181         
       2021  7  3  59398       0.2098      0.4388     -0.16092         
       2021  7  4  59399       0.2112      0.4377     -0.15997         
       2021  7  5  59400       0.2127      0.4366     -0.15894         
       2021  7  6  59401       0.2141      0.4355     -0.15779         
       2021  7  7  59402       0.2155      0.4343     -0.15652         
       2021  7  8  59403       0.2169      0.4331     -0.15514         
       2021  7  9  59404       0.2183      0.4320     -0.15370         
       2021  7 10  59405       0.2196      0.4307     -0.15224         
       2021  7 11  59406       0.2210      0.4295     -0.15086         
       2021  7 12  59407       0.2223      0.4282     -0.14962         
       2021  7 13  59408       0.2236      0.4270     -0.14860         
       2021  7 14  59409       0.2248      0.4256     -0.14784         
       2021  7 15  59410       0.2261      0.4243     -0.14734         
       2021  7 16  59411       0.2273      0.4230     -0.14706         
       2021  7 17  59412       0.2285      0.4216     -0.14690         
       2021  7 18  59413       0.2296      0.4202     -0.14675         
       2021  7 19  59414       0.2308      0.4188     -0.14650         
       2021  7 20  59415       0.2319      0.4174     -0.14605         
       2021  7 21  59416       0.2330      0.4160     -0.14539         
       2021  7 22  59417       0.2340      0.4145     -0.14455         
       2021  7 23  59418       0.2351      0.4131     -0.14362         
       2021  7 24  59419       0.2361      0.4116     -0.14274         
       2021  7 25  59420       0.2371      0.4101     -0.14201         
       2021  7 26  59421       0.2380      0.4085     -0.14148         
       2021  7 27  59422       0.2390      0.4070     -0.14113         
       2021  7 28  59423       0.2399      0.4054     -0.14086         
       2021  7 29  59424       0.2407      0.4039     -0.14067         
       2021  7 30  59425       0.2416      0.4023     -0.14048         
       2021  7 31  59426       0.2424      0.4007     -0.14025         
       2021  8  1  59427       0.2432      0.3991     -0.13991         
       2021  8  2  59428       0.2440      0.3975     -0.13941         
       2021  8  3  59429       0.2447      0.3958     -0.13880         
       2021  8  4  59430       0.2454      0.3942     -0.13799         
       2021  8  5  59431       0.2461      0.3925     -0.13703         
       2021  8  6  59432       0.2467      0.3908     -0.13603         
       2021  8  7  59433       0.2473      0.3892     -0.13505         
       2021  8  8  59434       0.2479      0.3875     -0.13425         
       2021  8  9  59435       0.2485      0.3858     -0.13366         
       2021  8 10  59436       0.2490      0.3840     -0.13328         
       2021  8 11  59437       0.2495      0.3823     -0.13314         
       2021  8 12  59438       0.2499      0.3806     -0.13320         
       2021  8 13  59439       0.2504      0.3789     -0.13328         
       2021  8 14  59440       0.2508      0.3771     -0.13334         
       2021  8 15  59441       0.2511      0.3754     -0.13328         
       2021  8 16  59442       0.2515      0.3736     -0.13296         
       2021  8 17  59443       0.2518      0.3718     -0.13243         
       2021  8 18  59444       0.2520      0.3700     -0.13175         
       2021  8 19  59445       0.2523      0.3683     -0.13096         
       2021  8 20  59446       0.2525      0.3665     -0.13015         
       2021  8 21  59447       0.2527      0.3647     -0.12943         
       2021  8 22  59448       0.2528      0.3629     -0.12887         
       2021  8 23  59449       0.2529      0.3611     -0.12850         
       2021  8 24  59450       0.2530      0.3593     -0.12828         
       2021  8 25  59451       0.2530      0.3575     -0.12808         
       2021  8 26  59452       0.2530      0.3557     -0.12786         
       2021  8 27  59453       0.2530      0.3539     -0.12756         
       2021  8 28  59454       0.2530      0.3521     -0.12715         
       2021  8 29  59455       0.2529      0.3503     -0.12659         
       2021  8 30  59456       0.2528      0.3485     -0.12586         
       2021  8 31  59457       0.2526      0.3467     -0.12500         
       2021  9  1  59458       0.2524      0.3449     -0.12412         
       2021  9  2  59459       0.2522      0.3431     -0.12322         
       2021  9  3  59460       0.2520      0.3413     -0.12233         
       2021  9  4  59461       0.2517      0.3395     -0.12152         
       2021  9  5  59462       0.2514      0.3377     -0.12091         
       2021  9  6  59463       0.2510      0.3359     -0.12062         
       2021  9  7  59464       0.2506      0.3341     -0.12072         
       2021  9  8  59465       0.2502      0.3323     -0.12114         
       2021  9  9  59466       0.2498      0.3305     -0.12175         
       2021  9 10  59467       0.2493      0.3288     -0.12243         
       2021  9 11  59468       0.2488      0.3270     -0.12304         
       2021  9 12  59469       0.2482      0.3253     -0.12343         
       2021  9 13  59470       0.2477      0.3235     -0.12357         
       2021  9 14  59471       0.2471      0.3218     -0.12347         
       2021  9 15  59472       0.2464      0.3200     -0.12321         
       2021  9 16  59473       0.2458      0.3183     -0.12289         
       2021  9 17  59474       0.2451      0.3166     -0.12260         
       2021  9 18  59475       0.2443      0.3149     -0.12242         
       2021  9 19  59476       0.2436      0.3132     -0.12241         
       2021  9 20  59477       0.2428      0.3115     -0.12253         
       2021  9 21  59478       0.2420      0.3098     -0.12273         
       2021  9 22  59479       0.2411      0.3082     -0.12293         
       2021  9 23  59480       0.2402      0.3065     -0.12310         
       2021  9 24  59481       0.2393      0.3049     -0.12316         
       2021  9 25  59482       0.2384      0.3032     -0.12306         
       2021  9 26  59483       0.2374      0.3016     -0.12281         
       2021  9 27  59484       0.2364      0.3000     -0.12244         
       2021  9 28  59485       0.2354      0.2985     -0.12198         
       2021  9 29  59486       0.2343      0.2969     -0.12143         
       2021  9 30  59487       0.2332      0.2953     -0.12092         
       2021 10  1  59488       0.2321      0.2938     -0.12057         
       2021 10  2  59489       0.2310      0.2923     -0.12041         
       2021 10  3  59490       0.2298      0.2908     -0.12051         
       2021 10  4  59491       0.2286      0.2893     -0.12096         
       2021 10  5  59492       0.2274      0.2878     -0.12169         
       2021 10  6  59493       0.2261      0.2864     -0.12264         
       2021 10  7  59494       0.2248      0.2849     -0.12372         
       2021 10  8  59495       0.2235      0.2835     -0.12476         
       2021 10  9  59496       0.2222      0.2821     -0.12561         
       2021 10 10  59497       0.2208      0.2807     -0.12628         
       2021 10 11  59498       0.2195      0.2794     -0.12674         
       2021 10 12  59499       0.2181      0.2781     -0.12697         
       2021 10 13  59500       0.2166      0.2767     -0.12714         
       2021 10 14  59501       0.2152      0.2754     -0.12740         
       2021 10 15  59502       0.2137      0.2742     -0.12784         
       2021 10 16  59503       0.2122      0.2729     -0.12843         
       2021 10 17  59504       0.2107      0.2717     -0.12917         
       2021 10 18  59505       0.2091      0.2705     -0.13003         
       2021 10 19  59506       0.2076      0.2693     -0.13093         
       2021 10 20  59507       0.2060      0.2682     -0.13182         
       2021 10 21  59508       0.2044      0.2670     -0.13262         
       2021 10 22  59509       0.2027      0.2659     -0.13327         
       2021 10 23  59510       0.2011      0.2648     -0.13376         
       2021 10 24  59511       0.1994      0.2638     -0.13407         
       2021 10 25  59512       0.1977      0.2627     -0.13424         
       2021 10 26  59513       0.1960      0.2617     -0.13435         
       2021 10 27  59514       0.1943      0.2607     -0.13446         
       2021 10 28  59515       0.1925      0.2598     -0.13459         
       2021 10 29  59516       0.1908      0.2589     -0.13473         
       2021 10 30  59517       0.1890      0.2580     -0.13491         
       2021 10 31  59518       0.1872      0.2571     -0.13530         
       2021 11  1  59519       0.1854      0.2562     -0.13592         
       2021 11  2  59520       0.1836      0.2554     -0.13674         
       2021 11  3  59521       0.1817      0.2546     -0.13772         
       2021 11  4  59522       0.1799      0.2538     -0.13873         
       2021 11  5  59523       0.1780      0.2531     -0.13958         
       2021 11  6  59524       0.1761      0.2524     -0.14024         
       2021 11  7  59525       0.1742      0.2517     -0.14068         
       2021 11  8  59526       0.1723      0.2511     -0.14095         
       2021 11  9  59527       0.1704      0.2504     -0.14109         
       2021 11 10  59528       0.1684      0.2499     -0.14121         
       2021 11 11  59529       0.1665      0.2493     -0.14138         
       2021 11 12  59530       0.1645      0.2488     -0.14172         
       2021 11 13  59531       0.1626      0.2483     -0.14229         
       2021 11 14  59532       0.1606      0.2478     -0.14302         
       2021 11 15  59533       0.1586      0.2473     -0.14382         
       2021 11 16  59534       0.1566      0.2469     -0.14465         
       2021 11 17  59535       0.1546      0.2465     -0.14546         
       2021 11 18  59536       0.1526      0.2462     -0.14616         
       2021 11 19  59537       0.1506      0.2459     -0.14677         
       2021 11 20  59538       0.1486      0.2456     -0.14726         
       2021 11 21  59539       0.1466      0.2453     -0.14767         
       2021 11 22  59540       0.1445      0.2451     -0.14801         
       2021 11 23  59541       0.1425      0.2449     -0.14826         
       2021 11 24  59542       0.1405      0.2447     -0.14853         
       2021 11 25  59543       0.1384      0.2446     -0.14886         
       2021 11 26  59544       0.1364      0.2445     -0.14930         
       2021 11 27  59545       0.1343      0.2444     -0.14994         
       2021 11 28  59546       0.1323      0.2444     -0.15084         
       2021 11 29  59547       0.1303      0.2444     -0.15202         
       2021 11 30  59548       0.1282      0.2444     -0.15339         
       2021 12  1  59549       0.1262      0.2444     -0.15481         
       2021 12  2  59550       0.1241      0.2445     -0.15614         
       2021 12  3  59551       0.1221      0.2446     -0.15721         
       2021 12  4  59552       0.1200      0.2448     -0.15786         
       2021 12  5  59553       0.1180      0.2450     -0.15816         
       2021 12  6  59554       0.1160      0.2452     -0.15822         
       2021 12  7  59555       0.1139      0.2454     -0.15818         
       2021 12  8  59556       0.1119      0.2457     -0.15817         
       2021 12  9  59557       0.1099      0.2460     -0.15825         
       2021 12 10  59558       0.1079      0.2464     -0.15844         
       2021 12 11  59559       0.1058      0.2467     -0.15874         
       2021 12 12  59560       0.1038      0.2471     -0.15915         
       2021 12 13  59561       0.1018      0.2476     -0.15959         
       2021 12 14  59562       0.0998      0.2480     -0.16000         
       2021 12 15  59563       0.0979      0.2485     -0.16043         
       2021 12 16  59564       0.0959      0.2491     -0.16080         
       2021 12 17  59565       0.0939      0.2496     -0.16096         
      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)                         
                      59179  -111.60    0.60   -6.33    0.06   
                      59180  -111.62    0.60   -6.14    0.06   
                      59181  -111.59    0.60   -5.97    0.06   
                      59182  -111.55    0.12   -5.95    0.17   
                      59183  -111.57    0.12   -6.07    0.17   
                      59184  -111.60    0.12   -6.24    0.17   
                      59185  -111.50    0.12   -6.35    0.17   
                      59186  -111.27    0.12   -6.41    0.17   
                      59187  -110.98    0.12   -6.43    0.17   
                      59188  -110.73    0.32   -6.41    0.16   
                      59189  -110.48    0.32   -6.35    0.16   
                      59190  -110.23    0.32   -6.25    0.16   
                      59191  -110.03    0.32   -6.14    0.16   
                                                            
                     IAU2000A Celestial Pole Offset Series  
                      MJD      dX     error     dY     error
                                    (msec. of arc)          
                      59179    0.177  0.239    0.071   0.057          
                      59180    0.170  0.239    0.085   0.057          
                      59181    0.157  0.239    0.101   0.057          
                      59182    0.139  0.049    0.117   0.168          
                      59183    0.118  0.049    0.133   0.168          
                      59184    0.095  0.049    0.150   0.168          
                      59185    0.090  0.049    0.153   0.168          
                      59186    0.090  0.049    0.153   0.168          
                      59187    0.090  0.049    0.153   0.168          
                      59188    0.090  0.128    0.153   0.160          
                      59189    0.090  0.128    0.153   0.160          
                      59190    0.090  0.128    0.153   0.160          
                      59191    0.090  0.128    0.153   0.160          
                                                                               
    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).          
