                                                                               
      **********************************************************************   
      *                                                                    *   
      *                   I E R S   B U L L E T I N - A                    *   
      *                                                                    *   
      *           Rapid Service/Prediction of Earth Orientation            *   
      **********************************************************************   
      28 January 2021                                     Vol. XXXIV No. 004   
      ______________________________________________________________________   
      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 at the end of June 2021                    *
     *                                                                     *
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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               
   21  1 22  59236 0.05241 .00009 0.32309 .00009 -0.170816 0.000015          
   21  1 23  59237 0.05230 .00009 0.32428 .00009 -0.170482 0.000013          
   21  1 24  59238 0.05181 .00009 0.32565 .00009 -0.170011 0.000011          
   21  1 25  59239 0.05100 .00009 0.32715 .00009 -0.169411 0.000007          
   21  1 26  59240 0.05037 .00009 0.32870 .00009 -0.168706 0.000007          
   21  1 27  59241 0.05002 .00009 0.33052 .00009 -0.167951 0.000007          
   21  1 28  59242 0.04972 .00010 0.33249 .00010 -0.167279 0.000006          
                                                                               
      _______________________________________________________________________  
                                                                               
      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 =  0.1274 - 0.0991 cos A - 0.0435 sin A + 0.0208 cos C + 0.0104 sin C  
      y =  0.3646 - 0.0397 cos A + 0.0895 sin A + 0.0104 cos C - 0.0208 sin C  
         UT1-UTC = -0.1621 + 0.00014 (MJD - 59250) - (UT2-UT1)                 
                                                                               
      where A = 2*pi*(MJD-59242)/365.25 and C = 2*pi*(MJD-59242)/435.          
                                                                               
         TAI-UTC(MJD 59243) = 37.0                                             
      The accuracy may be estimated from the expressions:                      
      S x,y = 0.00068 (MJD-59242)**0.80   S t = 0.00025 (MJD-59242)**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)              
       2021  1 29  59243       0.0493      0.3343     -0.16685         
       2021  1 30  59244       0.0488      0.3360     -0.16665         
       2021  1 31  59245       0.0483      0.3376     -0.16669         
       2021  2  1  59246       0.0477      0.3390     -0.16698         
       2021  2  2  59247       0.0472      0.3404     -0.16747         
       2021  2  3  59248       0.0467      0.3418     -0.16806         
       2021  2  4  59249       0.0463      0.3432     -0.16862         
       2021  2  5  59250       0.0459      0.3446     -0.16904         
       2021  2  6  59251       0.0455      0.3460     -0.16925         
       2021  2  7  59252       0.0451      0.3474     -0.16922         
       2021  2  8  59253       0.0446      0.3488     -0.16898         
       2021  2  9  59254       0.0442      0.3502     -0.16863         
       2021  2 10  59255       0.0438      0.3516     -0.16826         
       2021  2 11  59256       0.0434      0.3530     -0.16794         
       2021  2 12  59257       0.0430      0.3543     -0.16776         
       2021  2 13  59258       0.0427      0.3556     -0.16771         
       2021  2 14  59259       0.0425      0.3569     -0.16778         
       2021  2 15  59260       0.0422      0.3582     -0.16791         
       2021  2 16  59261       0.0420      0.3595     -0.16805         
       2021  2 17  59262       0.0419      0.3608     -0.16818         
       2021  2 18  59263       0.0417      0.3621     -0.16824         
       2021  2 19  59264       0.0416      0.3633     -0.16817         
       2021  2 20  59265       0.0415      0.3646     -0.16798         
       2021  2 21  59266       0.0415      0.3659     -0.16766         
       2021  2 22  59267       0.0415      0.3673     -0.16725         
       2021  2 23  59268       0.0415      0.3686     -0.16680         
       2021  2 24  59269       0.0416      0.3699     -0.16638         
       2021  2 25  59270       0.0416      0.3713     -0.16609         
       2021  2 26  59271       0.0417      0.3726     -0.16599         
       2021  2 27  59272       0.0419      0.3739     -0.16617         
       2021  2 28  59273       0.0421      0.3753     -0.16663         
       2021  3  1  59274       0.0423      0.3766     -0.16731         
       2021  3  2  59275       0.0425      0.3780     -0.16810         
       2021  3  3  59276       0.0428      0.3793     -0.16886         
       2021  3  4  59277       0.0431      0.3807     -0.16947         
       2021  3  5  59278       0.0434      0.3820     -0.16985         
       2021  3  6  59279       0.0437      0.3834     -0.17000         
       2021  3  7  59280       0.0441      0.3847     -0.16997         
       2021  3  8  59281       0.0445      0.3861     -0.16984         
       2021  3  9  59282       0.0449      0.3875     -0.16971         
       2021  3 10  59283       0.0454      0.3888     -0.16967         
       2021  3 11  59284       0.0459      0.3902     -0.16976         
       2021  3 12  59285       0.0464      0.3915     -0.17001         
       2021  3 13  59286       0.0469      0.3929     -0.17040         
       2021  3 14  59287       0.0474      0.3942     -0.17090         
       2021  3 15  59288       0.0480      0.3955     -0.17144         
       2021  3 16  59289       0.0486      0.3968     -0.17196         
       2021  3 17  59290       0.0493      0.3982     -0.17240         
       2021  3 18  59291       0.0499      0.3995     -0.17273         
       2021  3 19  59292       0.0506      0.4008     -0.17292         
       2021  3 20  59293       0.0514      0.4021     -0.17297         
       2021  3 21  59294       0.0521      0.4034     -0.17290         
       2021  3 22  59295       0.0529      0.4046     -0.17277         
       2021  3 23  59296       0.0537      0.4059     -0.17262         
       2021  3 24  59297       0.0545      0.4071     -0.17255         
       2021  3 25  59298       0.0553      0.4084     -0.17263         
       2021  3 26  59299       0.0562      0.4096     -0.17296         
       2021  3 27  59300       0.0571      0.4108     -0.17356         
       2021  3 28  59301       0.0580      0.4121     -0.17443         
       2021  3 29  59302       0.0589      0.4132     -0.17547         
       2021  3 30  59303       0.0599      0.4144     -0.17656         
       2021  3 31  59304       0.0609      0.4156     -0.17753         
       2021  4  1  59305       0.0619      0.4168     -0.17827         
       2021  4  2  59306       0.0630      0.4179     -0.17873         
       2021  4  3  59307       0.0640      0.4190     -0.17893         
       2021  4  4  59308       0.0651      0.4201     -0.17897         
       2021  4  5  59309       0.0662      0.4212     -0.17895         
       2021  4  6  59310       0.0674      0.4223     -0.17896         
       2021  4  7  59311       0.0685      0.4234     -0.17908         
       2021  4  8  59312       0.0697      0.4245     -0.17932         
       2021  4  9  59313       0.0709      0.4255     -0.17969         
       2021  4 10  59314       0.0721      0.4265     -0.18015         
       2021  4 11  59315       0.0733      0.4275     -0.18065         
       2021  4 12  59316       0.0746      0.4285     -0.18113         
       2021  4 13  59317       0.0759      0.4295     -0.18155         
       2021  4 14  59318       0.0772      0.4304     -0.18186         
       2021  4 15  59319       0.0785      0.4313     -0.18201         
       2021  4 16  59320       0.0798      0.4323     -0.18201         
       2021  4 17  59321       0.0812      0.4332     -0.18186         
       2021  4 18  59322       0.0826      0.4340     -0.18160         
       2021  4 19  59323       0.0840      0.4349     -0.18130         
       2021  4 20  59324       0.0854      0.4357     -0.18102         
       2021  4 21  59325       0.0868      0.4365     -0.18084         
       2021  4 22  59326       0.0883      0.4373     -0.18084         
       2021  4 23  59327       0.0897      0.4381     -0.18109         
       2021  4 24  59328       0.0912      0.4389     -0.18160         
       2021  4 25  59329       0.0927      0.4396     -0.18232         
       2021  4 26  59330       0.0942      0.4403     -0.18315         
       2021  4 27  59331       0.0958      0.4410     -0.18392         
       2021  4 28  59332       0.0973      0.4417     -0.18451         
       2021  4 29  59333       0.0989      0.4423     -0.18480         
       2021  4 30  59334       0.1004      0.4429     -0.18481         
       2021  5  1  59335       0.1020      0.4435     -0.18460         
       2021  5  2  59336       0.1036      0.4441     -0.18428         
       2021  5  3  59337       0.1052      0.4447     -0.18397         
       2021  5  4  59338       0.1068      0.4452     -0.18373         
       2021  5  5  59339       0.1085      0.4457     -0.18362         
       2021  5  6  59340       0.1101      0.4462     -0.18364         
       2021  5  7  59341       0.1118      0.4467     -0.18376         
       2021  5  8  59342       0.1134      0.4471     -0.18393         
       2021  5  9  59343       0.1151      0.4475     -0.18411         
       2021  5 10  59344       0.1168      0.4479     -0.18422         
       2021  5 11  59345       0.1185      0.4482     -0.18423         
       2021  5 12  59346       0.1202      0.4486     -0.18408         
       2021  5 13  59347       0.1219      0.4489     -0.18377         
       2021  5 14  59348       0.1236      0.4492     -0.18329         
       2021  5 15  59349       0.1253      0.4494     -0.18268         
       2021  5 16  59350       0.1270      0.4497     -0.18199         
       2021  5 17  59351       0.1288      0.4499     -0.18127         
       2021  5 18  59352       0.1305      0.4501     -0.18062         
       2021  5 19  59353       0.1322      0.4502     -0.18011         
       2021  5 20  59354       0.1340      0.4504     -0.17979         
       2021  5 21  59355       0.1357      0.4505     -0.17971         
       2021  5 22  59356       0.1375      0.4505     -0.17986         
       2021  5 23  59357       0.1392      0.4506     -0.18017         
       2021  5 24  59358       0.1410      0.4506     -0.18051         
       2021  5 25  59359       0.1427      0.4506     -0.18073         
       2021  5 26  59360       0.1445      0.4506     -0.18071         
       2021  5 27  59361       0.1463      0.4505     -0.18040         
       2021  5 28  59362       0.1480      0.4505     -0.17982         
       2021  5 29  59363       0.1498      0.4503     -0.17909         
       2021  5 30  59364       0.1515      0.4502     -0.17832         
       2021  5 31  59365       0.1533      0.4501     -0.17760         
       2021  6  1  59366       0.1551      0.4499     -0.17700         
       2021  6  2  59367       0.1568      0.4497     -0.17652         
       2021  6  3  59368       0.1586      0.4494     -0.17614         
       2021  6  4  59369       0.1603      0.4491     -0.17581         
       2021  6  5  59370       0.1620      0.4489     -0.17547         
       2021  6  6  59371       0.1638      0.4485     -0.17507         
       2021  6  7  59372       0.1655      0.4482     -0.17457         
       2021  6  8  59373       0.1672      0.4478     -0.17391         
       2021  6  9  59374       0.1690      0.4474     -0.17310         
       2021  6 10  59375       0.1707      0.4470     -0.17211         
       2021  6 11  59376       0.1724      0.4465     -0.17099         
       2021  6 12  59377       0.1741      0.4461     -0.16977         
       2021  6 13  59378       0.1758      0.4456     -0.16852         
       2021  6 14  59379       0.1775      0.4450     -0.16732         
       2021  6 15  59380       0.1791      0.4445     -0.16623         
       2021  6 16  59381       0.1808      0.4439     -0.16532         
       2021  6 17  59382       0.1825      0.4433     -0.16463         
       2021  6 18  59383       0.1841      0.4426     -0.16415         
       2021  6 19  59384       0.1857      0.4420     -0.16384         
       2021  6 20  59385       0.1873      0.4413     -0.16360         
       2021  6 21  59386       0.1890      0.4406     -0.16332         
       2021  6 22  59387       0.1905      0.4399     -0.16287         
       2021  6 23  59388       0.1921      0.4391     -0.16217         
       2021  6 24  59389       0.1937      0.4383     -0.16121         
       2021  6 25  59390       0.1953      0.4375     -0.16007         
       2021  6 26  59391       0.1968      0.4367     -0.15884         
       2021  6 27  59392       0.1983      0.4358     -0.15766         
       2021  6 28  59393       0.1998      0.4349     -0.15661         
       2021  6 29  59394       0.2013      0.4340     -0.15569         
       2021  6 30  59395       0.2028      0.4331     -0.15491         
       2021  7  1  59396       0.2043      0.4321     -0.15420         
       2021  7  2  59397       0.2057      0.4312     -0.15350         
       2021  7  3  59398       0.2071      0.4302     -0.15276         
       2021  7  4  59399       0.2085      0.4292     -0.15192         
       2021  7  5  59400       0.2099      0.4281     -0.15095         
       2021  7  6  59401       0.2113      0.4270     -0.14983         
       2021  7  7  59402       0.2127      0.4260     -0.14855         
       2021  7  8  59403       0.2140      0.4249     -0.14713         
       2021  7  9  59404       0.2153      0.4237     -0.14563         
       2021  7 10  59405       0.2166      0.4226     -0.14408         
       2021  7 11  59406       0.2178      0.4214     -0.14259         
       2021  7 12  59407       0.2191      0.4202     -0.14120         
       2021  7 13  59408       0.2203      0.4190     -0.14000         
       2021  7 14  59409       0.2215      0.4178     -0.13902         
       2021  7 15  59410       0.2227      0.4165     -0.13825         
       2021  7 16  59411       0.2239      0.4153     -0.13765         
       2021  7 17  59412       0.2250      0.4140     -0.13715         
       2021  7 18  59413       0.2261      0.4127     -0.13663         
       2021  7 19  59414       0.2272      0.4113     -0.13599         
       2021  7 20  59415       0.2283      0.4100     -0.13515         
       2021  7 21  59416       0.2293      0.4086     -0.13408         
       2021  7 22  59417       0.2303      0.4073     -0.13281         
       2021  7 23  59418       0.2313      0.4059     -0.13145         
       2021  7 24  59419       0.2322      0.4045     -0.13010         
       2021  7 25  59420       0.2332      0.4030     -0.12886         
       2021  7 26  59421       0.2341      0.4016     -0.12778         
       2021  7 27  59422       0.2350      0.4001     -0.12686         
       2021  7 28  59423       0.2358      0.3987     -0.12603         
       2021  7 29  59424       0.2366      0.3972     -0.12524         
       2021  7 30  59425       0.2374      0.3957     -0.12440         
       2021  7 31  59426       0.2382      0.3942     -0.12345         
       2021  8  1  59427       0.2390      0.3926     -0.12234         
       2021  8  2  59428       0.2397      0.3911     -0.12105         
       2021  8  3  59429       0.2404      0.3895     -0.11957         
       2021  8  4  59430       0.2410      0.3880     -0.11792         
       2021  8  5  59431       0.2416      0.3864     -0.11615         
       2021  8  6  59432       0.2422      0.3848     -0.11434         
       2021  8  7  59433       0.2428      0.3832     -0.11259         
       2021  8  8  59434       0.2434      0.3816     -0.11098         
       2021  8  9  59435       0.2439      0.3800     -0.10962         
       2021  8 10  59436       0.2443      0.3784     -0.10857         
       2021  8 11  59437       0.2448      0.3767     -0.10782         
       2021  8 12  59438       0.2452      0.3751     -0.10734         
       2021  8 13  59439       0.2456      0.3735     -0.10704         
       2021  8 14  59440       0.2460      0.3718     -0.10680         
       2021  8 15  59441       0.2463      0.3701     -0.10651         
       2021  8 16  59442       0.2466      0.3685     -0.10607         
       2021  8 17  59443       0.2468      0.3668     -0.10544         
       2021  8 18  59444       0.2471      0.3651     -0.10462         
       2021  8 19  59445       0.2473      0.3634     -0.10367         
       2021  8 20  59446       0.2474      0.3617     -0.10268         
       2021  8 21  59447       0.2476      0.3600     -0.10175         
       2021  8 22  59448       0.2477      0.3583     -0.10095         
       2021  8 23  59449       0.2478      0.3566     -0.10030         
       2021  8 24  59450       0.2478      0.3549     -0.09980         
       2021  8 25  59451       0.2478      0.3532     -0.09938         
       2021  8 26  59452       0.2478      0.3515     -0.09898         
       2021  8 27  59453       0.2477      0.3498     -0.09850         
       2021  8 28  59454       0.2477      0.3481     -0.09790         
       2021  8 29  59455       0.2475      0.3464     -0.09714         
       2021  8 30  59456       0.2474      0.3446     -0.09620         
       2021  8 31  59457       0.2472      0.3429     -0.09510         
       2021  9  1  59458       0.2470      0.3412     -0.09390         
       2021  9  2  59459       0.2468      0.3395     -0.09268         
       2021  9  3  59460       0.2465      0.3378     -0.09151         
       2021  9  4  59461       0.2462      0.3361     -0.09049         
       2021  9  5  59462       0.2458      0.3344     -0.08967         
       2021  9  6  59463       0.2455      0.3327     -0.08912         
       2021  9  7  59464       0.2451      0.3310     -0.08884         
       2021  9  8  59465       0.2446      0.3293     -0.08880         
       2021  9  9  59466       0.2441      0.3276     -0.08891         
       2021  9 10  59467       0.2437      0.3260     -0.08911         
       2021  9 11  59468       0.2431      0.3243     -0.08923         
       2021  9 12  59469       0.2426      0.3226     -0.08916         
       2021  9 13  59470       0.2420      0.3210     -0.08889         
       2021  9 14  59471       0.2413      0.3193     -0.08847         
       2021  9 15  59472       0.2407      0.3177     -0.08793         
       2021  9 16  59473       0.2400      0.3160     -0.08733         
       2021  9 17  59474       0.2393      0.3144     -0.08680         
       2021  9 18  59475       0.2385      0.3128     -0.08641         
       2021  9 19  59476       0.2378      0.3112     -0.08618         
       2021  9 20  59477       0.2370      0.3096     -0.08613         
       2021  9 21  59478       0.2361      0.3080     -0.08622         
       2021  9 22  59479       0.2353      0.3064     -0.08638         
       2021  9 23  59480       0.2344      0.3048     -0.08654         
       2021  9 24  59481       0.2334      0.3033     -0.08663         
       2021  9 25  59482       0.2325      0.3018     -0.08668         
       2021  9 26  59483       0.2315      0.3002     -0.08656         
       2021  9 27  59484       0.2305      0.2987     -0.08630         
       2021  9 28  59485       0.2294      0.2972     -0.08593         
       2021  9 29  59486       0.2284      0.2957     -0.08543         
       2021  9 30  59487       0.2273      0.2943     -0.08484         
       2021 10  1  59488       0.2262      0.2928     -0.08429         
       2021 10  2  59489       0.2250      0.2914     -0.08396         
       2021 10  3  59490       0.2238      0.2899     -0.08396         
       2021 10  4  59491       0.2226      0.2885     -0.08429         
       2021 10  5  59492       0.2214      0.2871     -0.08500         
       2021 10  6  59493       0.2201      0.2858     -0.08594         
       2021 10  7  59494       0.2189      0.2844     -0.08700         
       2021 10  8  59495       0.2176      0.2831     -0.08801         
       2021 10  9  59496       0.2162      0.2818     -0.08882         
       2021 10 10  59497       0.2149      0.2805     -0.08940         
       2021 10 11  59498       0.2135      0.2792     -0.08976         
       2021 10 12  59499       0.2121      0.2779     -0.08996         
       2021 10 13  59500       0.2107      0.2767     -0.09009         
       2021 10 14  59501       0.2092      0.2755     -0.09025         
       2021 10 15  59502       0.2077      0.2743     -0.09054         
       2021 10 16  59503       0.2062      0.2731     -0.09105         
       2021 10 17  59504       0.2047      0.2719     -0.09176         
       2021 10 18  59505       0.2032      0.2708     -0.09267         
       2021 10 19  59506       0.2016      0.2697     -0.09362         
       2021 10 20  59507       0.2000      0.2686     -0.09455         
       2021 10 21  59508       0.1984      0.2676     -0.09542         
       2021 10 22  59509       0.1968      0.2665     -0.09620         
       2021 10 23  59510       0.1952      0.2655     -0.09684         
       2021 10 24  59511       0.1935      0.2645     -0.09732         
       2021 10 25  59512       0.1918      0.2635     -0.09764         
       2021 10 26  59513       0.1901      0.2626     -0.09789         
       2021 10 27  59514       0.1884      0.2617     -0.09803         
       2021 10 28  59515       0.1867      0.2608     -0.09814         
       2021 10 29  59516       0.1849      0.2599     -0.09835         
       2021 10 30  59517       0.1832      0.2591     -0.09870         
       2021 10 31  59518       0.1814      0.2582     -0.09936         
       2021 11  1  59519       0.1796      0.2574     -0.10029         
       2021 11  2  59520       0.1778      0.2567     -0.10144         
       2021 11  3  59521       0.1759      0.2559     -0.10276         
       2021 11  4  59522       0.1741      0.2552     -0.10411         
       2021 11  5  59523       0.1723      0.2546     -0.10524         
       2021 11  6  59524       0.1704      0.2539     -0.10611         
       2021 11  7  59525       0.1685      0.2533     -0.10668         
       2021 11  8  59526       0.1666      0.2527     -0.10694         
       2021 11  9  59527       0.1647      0.2521     -0.10705         
       2021 11 10  59528       0.1628      0.2515     -0.10720         
       2021 11 11  59529       0.1609      0.2510     -0.10745         
       2021 11 12  59530       0.1590      0.2505     -0.10782         
       2021 11 13  59531       0.1570      0.2501     -0.10833         
       2021 11 14  59532       0.1551      0.2497     -0.10895         
       2021 11 15  59533       0.1531      0.2493     -0.10964         
       2021 11 16  59534       0.1511      0.2489     -0.11031         
       2021 11 17  59535       0.1492      0.2485     -0.11083         
       2021 11 18  59536       0.1472      0.2482     -0.11118         
       2021 11 19  59537       0.1452      0.2479     -0.11135         
       2021 11 20  59538       0.1432      0.2477     -0.11133         
       2021 11 21  59539       0.1412      0.2475     -0.11114         
       2021 11 22  59540       0.1392      0.2473     -0.11079         
       2021 11 23  59541       0.1372      0.2471     -0.11036         
       2021 11 24  59542       0.1352      0.2470     -0.11001         
       2021 11 25  59543       0.1332      0.2469     -0.10975         
       2021 11 26  59544       0.1312      0.2468     -0.10961         
       2021 11 27  59545       0.1292      0.2468     -0.10964         
       2021 11 28  59546       0.1272      0.2468     -0.10991         
       2021 11 29  59547       0.1252      0.2468     -0.11050         
       2021 11 30  59548       0.1232      0.2468     -0.11140         
       2021 12  1  59549       0.1212      0.2469     -0.11246         
       2021 12  2  59550       0.1191      0.2470     -0.11352         
       2021 12  3  59551       0.1171      0.2472     -0.11443         
       2021 12  4  59552       0.1151      0.2473     -0.11510         
       2021 12  5  59553       0.1131      0.2475     -0.11547         
       2021 12  6  59554       0.1111      0.2478     -0.11563         
       2021 12  7  59555       0.1091      0.2480     -0.11571         
       2021 12  8  59556       0.1072      0.2483     -0.11581         
       2021 12  9  59557       0.1052      0.2486     -0.11603         
       2021 12 10  59558       0.1032      0.2490     -0.11637         
       2021 12 11  59559       0.1012      0.2494     -0.11678         
       2021 12 12  59560       0.0993      0.2498     -0.11725         
       2021 12 13  59561       0.0973      0.2502     -0.11766         
       2021 12 14  59562       0.0954      0.2507     -0.11795         
       2021 12 15  59563       0.0934      0.2512     -0.11806         
       2021 12 16  59564       0.0915      0.2518     -0.11803         
       2021 12 17  59565       0.0896      0.2523     -0.11777         
       2021 12 18  59566       0.0877      0.2529     -0.11733         
       2021 12 19  59567       0.0858      0.2535     -0.11676         
       2021 12 20  59568       0.0839      0.2542     -0.11612         
       2021 12 21  59569       0.0820      0.2549     -0.11549         
       2021 12 22  59570       0.0801      0.2556     -0.11489         
       2021 12 23  59571       0.0783      0.2563     -0.11444         
       2021 12 24  59572       0.0765      0.2571     -0.11426         
       2021 12 25  59573       0.0746      0.2579     -0.11432         
       2021 12 26  59574       0.0728      0.2587     -0.11465         
       2021 12 27  59575       0.0710      0.2596     -0.11524         
       2021 12 28  59576       0.0693      0.2604     -0.11596         
       2021 12 29  59577       0.0675      0.2613     -0.11670         
       2021 12 30  59578       0.0658      0.2623     -0.11735         
       2021 12 31  59579       0.0640      0.2632     -0.11781         
       2022  1  1  59580       0.0623      0.2642     -0.11801         
       2022  1  2  59581       0.0606      0.2653     -0.11808         
       2022  1  3  59582       0.0590      0.2663     -0.11809         
       2022  1  4  59583       0.0573      0.2674     -0.11810         
       2022  1  5  59584       0.0557      0.2685     -0.11826         
       2022  1  6  59585       0.0541      0.2696     -0.11866         
       2022  1  7  59586       0.0525      0.2707     -0.11928         
       2022  1  8  59587       0.0509      0.2719     -0.11999         
       2022  1  9  59588       0.0494      0.2731     -0.12069         
       2022  1 10  59589       0.0478      0.2743     -0.12134         
       2022  1 11  59590       0.0463      0.2756     -0.12182         
       2022  1 12  59591       0.0448      0.2768     -0.12215         
       2022  1 13  59592       0.0434      0.2781     -0.12229         
       2022  1 14  59593       0.0420      0.2794     -0.12225         
       2022  1 15  59594       0.0405      0.2808     -0.12206         
       2022  1 16  59595       0.0392      0.2821     -0.12176         
       2022  1 17  59596       0.0378      0.2835     -0.12145         
       2022  1 18  59597       0.0365      0.2849     -0.12121         
       2022  1 19  59598       0.0352      0.2863     -0.12113         
       2022  1 20  59599       0.0339      0.2878     -0.12121         
       2022  1 21  59600       0.0326      0.2893     -0.12140         
       2022  1 22  59601       0.0314      0.2907     -0.12169         
       2022  1 23  59602       0.0302      0.2922     -0.12213         
       2022  1 24  59603       0.0290      0.2938     -0.12267         
       2022  1 25  59604       0.0279      0.2953     -0.12320         
       2022  1 26  59605       0.0267      0.2969     -0.12365         
       2022  1 27  59606       0.0257      0.2985     -0.12393         
       2022  1 28  59607       0.0246      0.3001     -0.12396         
      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)                         
                      59220  -108.52    0.50   -5.63    0.08   
                      59221  -108.80    0.50   -5.47    0.08   
                      59222  -109.26    0.50   -5.33    0.08   
                      59223  -109.72    0.32   -5.30    0.16   
                      59224  -109.99    0.47   -5.37    0.23   
                      59225  -110.00    0.47   -5.45    0.23   
                      59226  -109.81    0.47   -5.46    0.23   
                                                            
                     IAU2000A Celestial Pole Offset Series  
                      MJD      dX     error     dY     error
                                    (msec. of arc)          
                      59220    0.200  0.200    0.124   0.083          
                      59221    0.198  0.200    0.136   0.083          
                      59222    0.196  0.200    0.149   0.083          
                      59223    0.194  0.128    0.163   0.160          
                      59224    0.191  0.186    0.179   0.227          
                      59225    0.189  0.186    0.195   0.227          
                      59226    0.186  0.186    0.211   0.227          
                                                                               
    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).          
