                                                                               
      **********************************************************************   
      *                                                                    *   
      *                   I E R S   B U L L E T I N - A                    *   
      *                                                                    *   
      *           Rapid Service/Prediction of Earth Orientation            *   
      **********************************************************************   
      16 April 2020                                      Vol. XXXIII No. 016   
      ______________________________________________________________________   
      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                                       
     ***********************************************************************
     *                                                                     *
     * Notice of Publication Web and FTP Shutdown:                         *
     * The US Naval Observatory's Rapid Service/Prediction Center web and  *
     * FTP sites (at maia.usno.navy.mil and toshi.nofs.navy.mil) must      *
     * undergo modernization and have been offline since 24 October 2019.  *
     * The expected completion of work and return of service is estimated  *
     * as 30 April 2020. Please visit https://www.usno.navy.mil and submit *
     * a Requirements Form to the USNO Public Affairs Official (PAO) if    *
     * the information you are seeking is not accessible via another       *
     * means.  If the Requirements Form is not available, please directly  *
     * contact the USNO PAO Geoff Chester at email address                 *
     * geoff.chester@navy.mil or phone number 202 762 1438.                *
     *                                                                     *
     * Although the Bulletin A makes several references to maia, one       *
     * should note that the paragraph above supercedes any information     *
     * that is contained in the Bulletin A text. Because some users mis-   *
     * takenly use Bulletin A (ser7.dat) instead of other formats (such as *
     * finals2000A.daily) for operational, machine-to-machine uses, we     *
     * do not wish to change the spacing or text of the files.  In the     *
     * past, when spacings had changed, users had stated that any change   *
     * to the Bulletin format outside of this remarks area had broken      *
     * their operations. Therefore, we have not removed the old references *
     * to maia within the text of the Bulletin A (ser7.dat file).          *
     *                                                                     *
     * This shutdown has lead to the indefinite cessation of IERS          *
     * Bulletin A distribution emails. If this occurs, current             *
     * subscribers to the Bulletin A email distribution list may receive   *
     * future mailings from a different address (if this service is        *
     * restored). In the meantime, we will be unable to process email      *
     * subscription/unsubscription requests.                               *
     *                                                                     *
     * Currently, updated EOPs may be available at NASA's Archive of       * 
     * Space Geodesy Data anonymous FTP server at:                         *
     *   ftp://cddis.gsfc.nasa.gov/pub/products/iers                       *
     * Daily EOP data may be uploaded here by 18:00 UTC, and               *
     * Bulletin A EOP data may be available by 20:00 UTC.                  *
     * Users should please verify results obtained from this site;         *
     * we cannot guarantee the integrity or timeliness of files provided   *
     * at this mirror site.                                                *
     *                                                                     *
     * For other download options from CDDIS, such as HTTPS, please refer  *
     * to the https://cddis.nasa.gov/About/CDDIS_File_Download_FAQ.html    *
     *                                                                     *
     * In addition, updated EOPs may be available at IERS:                 *
     *   https://datacenter.iers.org/eop.php                               *
     * EOP data files are uploaded directly from USNO to this site each    *
     * day.  For further information, contact the IERS directly.           *
     *                                                                     *
     * Questions and enquiries about EOPs can be emailed to the            *
     * following address:                                                  *
     *     usn.ncr.navobsydc.mbx.eopcp@mail.mil                            *
     *                                                                     *
     * Distribution statement A.                                           *
     *   Approved for public release: distribution unlimited.              *
     *                                                                     *
     ***********************************************************************
     ________________________________________________________________________  
       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  4 10  58949 0.05813 .00009 0.41200 .00009 -0.234630 0.000016          
   20  4 11  58950 0.05857 .00009 0.41297 .00009 -0.235771 0.000017          
   20  4 12  58951 0.05910 .00009 0.41406 .00009 -0.236626 0.000017          
   20  4 13  58952 0.05987 .00009 0.41537 .00009 -0.237224 0.000007          
   20  4 14  58953 0.06091 .00009 0.41673 .00009 -0.237607 0.000008          
   20  4 15  58954 0.06197 .00009 0.41813 .00009 -0.237841 0.000007          
   20  4 16  58955 0.06281 .00009 0.41970 .00009 -0.238029 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 =  0.1290 - 0.0822 cos A + 0.0628 sin A + 0.0175 cos C + 0.0085 sin C  
      y =  0.3523 + 0.0583 cos A + 0.0752 sin A + 0.0085 cos C - 0.0175 sin C  
         UT1-UTC = -0.2090 - 0.00017 (MJD - 58963) - (UT2-UT1)                 
                                                                               
      where A = 2*pi*(MJD-58955)/365.25 and C = 2*pi*(MJD-58955)/435.          
                                                                               
         TAI-UTC(MJD 58956) = 37.0                                             
      The accuracy may be estimated from the expressions:                      
      S x,y = 0.00068 (MJD-58955)**0.80   S t = 0.00025 (MJD-58955)**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  4 17  58956       0.0636      0.4211     -0.23832         
       2020  4 18  58957       0.0644      0.4225     -0.23873         
       2020  4 19  58958       0.0653      0.4237     -0.23922         
       2020  4 20  58959       0.0663      0.4247     -0.23977         
       2020  4 21  58960       0.0675      0.4257     -0.24034         
       2020  4 22  58961       0.0687      0.4266     -0.24093         
       2020  4 23  58962       0.0701      0.4274     -0.24149         
       2020  4 24  58963       0.0715      0.4284     -0.24199         
       2020  4 25  58964       0.0729      0.4293     -0.24236         
       2020  4 26  58965       0.0743      0.4303     -0.24259         
       2020  4 27  58966       0.0757      0.4311     -0.24270         
       2020  4 28  58967       0.0771      0.4319     -0.24273         
       2020  4 29  58968       0.0785      0.4327     -0.24272         
       2020  4 30  58969       0.0800      0.4334     -0.24279         
       2020  5  1  58970       0.0815      0.4341     -0.24303         
       2020  5  2  58971       0.0831      0.4348     -0.24351         
       2020  5  3  58972       0.0847      0.4355     -0.24426         
       2020  5  4  58973       0.0863      0.4362     -0.24525         
       2020  5  5  58974       0.0879      0.4368     -0.24638         
       2020  5  6  58975       0.0895      0.4375     -0.24752         
       2020  5  7  58976       0.0911      0.4381     -0.24851         
       2020  5  8  58977       0.0928      0.4387     -0.24923         
       2020  5  9  58978       0.0944      0.4392     -0.24964         
       2020  5 10  58979       0.0961      0.4397     -0.24977         
       2020  5 11  58980       0.0978      0.4402     -0.24970         
       2020  5 12  58981       0.0995      0.4407     -0.24953         
       2020  5 13  58982       0.1013      0.4412     -0.24936         
       2020  5 14  58983       0.1030      0.4416     -0.24926         
       2020  5 15  58984       0.1047      0.4420     -0.24925         
       2020  5 16  58985       0.1065      0.4424     -0.24935         
       2020  5 17  58986       0.1082      0.4428     -0.24955         
       2020  5 18  58987       0.1100      0.4431     -0.24982         
       2020  5 19  58988       0.1118      0.4434     -0.25013         
       2020  5 20  58989       0.1136      0.4437     -0.25043         
       2020  5 21  58990       0.1154      0.4439     -0.25066         
       2020  5 22  58991       0.1171      0.4441     -0.25078         
       2020  5 23  58992       0.1189      0.4443     -0.25077         
       2020  5 24  58993       0.1207      0.4445     -0.25061         
       2020  5 25  58994       0.1226      0.4446     -0.25034         
       2020  5 26  58995       0.1244      0.4447     -0.25000         
       2020  5 27  58996       0.1262      0.4448     -0.24966         
       2020  5 28  58997       0.1280      0.4448     -0.24939         
       2020  5 29  58998       0.1298      0.4449     -0.24927         
       2020  5 30  58999       0.1316      0.4448     -0.24935         
       2020  5 31  59000       0.1334      0.4448     -0.24963         
       2020  6  1  59001       0.1353      0.4447     -0.25008         
       2020  6  2  59002       0.1371      0.4446     -0.25060         
       2020  6  3  59003       0.1389      0.4445     -0.25107         
       2020  6  4  59004       0.1407      0.4444     -0.25137         
       2020  6  5  59005       0.1425      0.4442     -0.25143         
       2020  6  6  59006       0.1443      0.4440     -0.25125         
       2020  6  7  59007       0.1461      0.4437     -0.25087         
       2020  6  8  59008       0.1479      0.4435     -0.25038         
       2020  6  9  59009       0.1497      0.4432     -0.24988         
       2020  6 10  59010       0.1515      0.4428     -0.24942         
       2020  6 11  59011       0.1533      0.4425     -0.24905         
       2020  6 12  59012       0.1551      0.4421     -0.24880         
       2020  6 13  59013       0.1569      0.4417     -0.24863         
       2020  6 14  59014       0.1587      0.4413     -0.24852         
       2020  6 15  59015       0.1604      0.4408     -0.24843         
       2020  6 16  59016       0.1622      0.4403     -0.24832         
       2020  6 17  59017       0.1639      0.4398     -0.24814         
       2020  6 18  59018       0.1657      0.4392     -0.24785         
       2020  6 19  59019       0.1674      0.4386     -0.24743         
       2020  6 20  59020       0.1691      0.4380     -0.24687         
       2020  6 21  59021       0.1708      0.4374     -0.24619         
       2020  6 22  59022       0.1725      0.4367     -0.24543         
       2020  6 23  59023       0.1742      0.4361     -0.24466         
       2020  6 24  59024       0.1759      0.4353     -0.24396         
       2020  6 25  59025       0.1775      0.4346     -0.24341         
       2020  6 26  59026       0.1792      0.4338     -0.24305         
       2020  6 27  59027       0.1808      0.4330     -0.24289         
       2020  6 28  59028       0.1824      0.4322     -0.24289         
       2020  6 29  59029       0.1840      0.4314     -0.24295         
       2020  6 30  59030       0.1856      0.4305     -0.24299         
       2020  7  1  59031       0.1872      0.4296     -0.24290         
       2020  7  2  59032       0.1887      0.4287     -0.24259         
       2020  7  3  59033       0.1903      0.4278     -0.24205         
       2020  7  4  59034       0.1918      0.4268     -0.24130         
       2020  7  5  59035       0.1933      0.4258     -0.24041         
       2020  7  6  59036       0.1948      0.4248     -0.23947         
       2020  7  7  59037       0.1962      0.4237     -0.23855         
       2020  7  8  59038       0.1977      0.4227     -0.23771         
       2020  7  9  59039       0.1991      0.4216     -0.23697         
       2020  7 10  59040       0.2005      0.4205     -0.23634         
       2020  7 11  59041       0.2019      0.4194     -0.23579         
       2020  7 12  59042       0.2033      0.4182     -0.23528         
       2020  7 13  59043       0.2046      0.4170     -0.23477         
       2020  7 14  59044       0.2059      0.4158     -0.23423         
       2020  7 15  59045       0.2072      0.4146     -0.23361         
       2020  7 16  59046       0.2085      0.4134     -0.23288         
       2020  7 17  59047       0.2098      0.4121     -0.23204         
       2020  7 18  59048       0.2110      0.4109     -0.23107         
       2020  7 19  59049       0.2122      0.4096     -0.23002         
       2020  7 20  59050       0.2134      0.4082     -0.22894         
       2020  7 21  59051       0.2145      0.4069     -0.22792         
       2020  7 22  59052       0.2156      0.4056     -0.22704         
       2020  7 23  59053       0.2168      0.4042     -0.22638         
       2020  7 24  59054       0.2178      0.4028     -0.22595         
       2020  7 25  59055       0.2189      0.4014     -0.22570         
       2020  7 26  59056       0.2199      0.4000     -0.22556         
       2020  7 27  59057       0.2209      0.3985     -0.22541         
       2020  7 28  59058       0.2219      0.3971     -0.22516         
       2020  7 29  59059       0.2228      0.3956     -0.22471         
       2020  7 30  59060       0.2237      0.3941     -0.22405         
       2020  7 31  59061       0.2246      0.3926     -0.22319         
       2020  8  1  59062       0.2255      0.3911     -0.22218         
       2020  8  2  59063       0.2263      0.3896     -0.22112         
       2020  8  3  59064       0.2271      0.3880     -0.22011         
       2020  8  4  59065       0.2279      0.3865     -0.21920         
       2020  8  5  59066       0.2286      0.3849     -0.21841         
       2020  8  6  59067       0.2293      0.3833     -0.21775         
       2020  8  7  59068       0.2300      0.3818     -0.21719         
       2020  8  8  59069       0.2307      0.3802     -0.21672         
       2020  8  9  59070       0.2313      0.3786     -0.21628         
       2020  8 10  59071       0.2319      0.3769     -0.21582         
       2020  8 11  59072       0.2324      0.3753     -0.21531         
       2020  8 12  59073       0.2330      0.3737     -0.21471         
       2020  8 13  59074       0.2335      0.3720     -0.21401         
       2020  8 14  59075       0.2339      0.3704     -0.21320         
       2020  8 15  59076       0.2344      0.3687     -0.21231         
       2020  8 16  59077       0.2348      0.3670     -0.21139         
       2020  8 17  59078       0.2351      0.3654     -0.21052         
       2020  8 18  59079       0.2355      0.3637     -0.20978         
       2020  8 19  59080       0.2358      0.3620     -0.20928         
       2020  8 20  59081       0.2361      0.3603     -0.20904         
       2020  8 21  59082       0.2363      0.3586     -0.20905         
       2020  8 22  59083       0.2365      0.3569     -0.20923         
       2020  8 23  59084       0.2367      0.3552     -0.20944         
       2020  8 24  59085       0.2368      0.3535     -0.20956         
       2020  8 25  59086       0.2369      0.3518     -0.20949         
       2020  8 26  59087       0.2370      0.3501     -0.20920         
       2020  8 27  59088       0.2371      0.3484     -0.20870         
       2020  8 28  59089       0.2371      0.3467     -0.20807         
       2020  8 29  59090       0.2371      0.3450     -0.20736         
       2020  8 30  59091       0.2370      0.3433     -0.20668         
       2020  8 31  59092       0.2369      0.3415     -0.20609         
       2020  9  1  59093       0.2368      0.3398     -0.20562         
       2020  9  2  59094       0.2366      0.3381     -0.20531         
       2020  9  3  59095       0.2364      0.3364     -0.20512         
       2020  9  4  59096       0.2362      0.3347     -0.20504         
       2020  9  5  59097       0.2360      0.3330     -0.20501         
       2020  9  6  59098       0.2357      0.3313     -0.20500         
       2020  9  7  59099       0.2354      0.3296     -0.20494         
       2020  9  8  59100       0.2350      0.3280     -0.20480         
       2020  9  9  59101       0.2346      0.3263     -0.20456         
       2020  9 10  59102       0.2342      0.3246     -0.20423         
       2020  9 11  59103       0.2338      0.3229     -0.20381         
       2020  9 12  59104       0.2333      0.3213     -0.20334         
       2020  9 13  59105       0.2328      0.3196     -0.20290         
       2020  9 14  59106       0.2322      0.3180     -0.20257         
       2020  9 15  59107       0.2317      0.3164     -0.20245         
       2020  9 16  59108       0.2310      0.3147     -0.20260         
       2020  9 17  59109       0.2304      0.3131     -0.20305         
       2020  9 18  59110       0.2297      0.3115     -0.20373         
       2020  9 19  59111       0.2290      0.3099     -0.20453         
       2020  9 20  59112       0.2283      0.3083     -0.20529         
       2020  9 21  59113       0.2275      0.3068     -0.20588         
       2020  9 22  59114       0.2267      0.3052     -0.20623         
       2020  9 23  59115       0.2259      0.3037     -0.20633         
       2020  9 24  59116       0.2250      0.3021     -0.20624         
       2020  9 25  59117       0.2242      0.3006     -0.20605         
       2020  9 26  59118       0.2232      0.2991     -0.20585         
       2020  9 27  59119       0.2223      0.2976     -0.20573         
       2020  9 28  59120       0.2213      0.2961     -0.20572         
       2020  9 29  59121       0.2203      0.2947     -0.20584         
       2020  9 30  59122       0.2193      0.2932     -0.20611         
       2020 10  1  59123       0.2182      0.2918     -0.20648         
       2020 10  2  59124       0.2171      0.2904     -0.20692         
       2020 10  3  59125       0.2160      0.2890     -0.20737         
       2020 10  4  59126       0.2149      0.2876     -0.20779         
       2020 10  5  59127       0.2137      0.2862     -0.20813         
       2020 10  6  59128       0.2125      0.2849     -0.20836         
       2020 10  7  59129       0.2113      0.2836     -0.20848         
       2020 10  8  59130       0.2100      0.2823     -0.20850         
       2020 10  9  59131       0.2087      0.2810     -0.20846         
       2020 10 10  59132       0.2074      0.2797     -0.20841         
       2020 10 11  59133       0.2061      0.2785     -0.20842         
       2020 10 12  59134       0.2047      0.2773     -0.20859         
       2020 10 13  59135       0.2034      0.2760     -0.20900         
       2020 10 14  59136       0.2020      0.2749     -0.20970         
       2020 10 15  59137       0.2005      0.2737     -0.21068         
       2020 10 16  59138       0.1991      0.2726     -0.21185         
       2020 10 17  59139       0.1976      0.2715     -0.21306         
       2020 10 18  59140       0.1961      0.2704     -0.21416         
       2020 10 19  59141       0.1946      0.2693     -0.21501         
       2020 10 20  59142       0.1931      0.2683     -0.21558         
       2020 10 21  59143       0.1915      0.2672     -0.21589         
       2020 10 22  59144       0.1899      0.2663     -0.21602         
       2020 10 23  59145       0.1883      0.2653     -0.21607         
       2020 10 24  59146       0.1867      0.2643     -0.21615         
       2020 10 25  59147       0.1851      0.2634     -0.21631         
       2020 10 26  59148       0.1834      0.2625     -0.21658         
       2020 10 27  59149       0.1817      0.2617     -0.21698         
       2020 10 28  59150       0.1800      0.2608     -0.21747         
       2020 10 29  59151       0.1783      0.2600     -0.21803         
       2020 10 30  59152       0.1766      0.2592     -0.21859         
       2020 10 31  59153       0.1749      0.2585     -0.21910         
       2020 11  1  59154       0.1731      0.2577     -0.21951         
       2020 11  2  59155       0.1713      0.2570     -0.21978         
       2020 11  3  59156       0.1696      0.2564     -0.21988         
       2020 11  4  59157       0.1678      0.2557     -0.21984         
       2020 11  5  59158       0.1659      0.2551     -0.21969         
       2020 11  6  59159       0.1641      0.2545     -0.21946         
       2020 11  7  59160       0.1623      0.2539     -0.21923         
       2020 11  8  59161       0.1604      0.2534     -0.21906         
       2020 11  9  59162       0.1585      0.2529     -0.21903         
       2020 11 10  59163       0.1567      0.2524     -0.21920         
       2020 11 11  59164       0.1548      0.2520     -0.21960         
       2020 11 12  59165       0.1529      0.2516     -0.22021         
       2020 11 13  59166       0.1510      0.2512     -0.22093         
       2020 11 14  59167       0.1491      0.2508     -0.22163         
       2020 11 15  59168       0.1472      0.2505     -0.22216         
       2020 11 16  59169       0.1452      0.2502     -0.22245         
       2020 11 17  59170       0.1433      0.2499     -0.22251         
       2020 11 18  59171       0.1413      0.2497     -0.22240         
       2020 11 19  59172       0.1394      0.2495     -0.22224         
       2020 11 20  59173       0.1374      0.2493     -0.22209         
       2020 11 21  59174       0.1355      0.2492     -0.22200         
       2020 11 22  59175       0.1335      0.2491     -0.22197         
       2020 11 23  59176       0.1316      0.2490     -0.22200         
       2020 11 24  59177       0.1296      0.2489     -0.22211         
       2020 11 25  59178       0.1276      0.2489     -0.22228         
       2020 11 26  59179       0.1257      0.2489     -0.22246         
       2020 11 27  59180       0.1237      0.2490     -0.22263         
       2020 11 28  59181       0.1217      0.2490     -0.22275         
       2020 11 29  59182       0.1197      0.2491     -0.22278         
       2020 11 30  59183       0.1178      0.2493     -0.22272         
       2020 12  1  59184       0.1158      0.2494     -0.22254         
       2020 12  2  59185       0.1138      0.2496     -0.22230         
       2020 12  3  59186       0.1119      0.2499     -0.22208         
       2020 12  4  59187       0.1099      0.2501     -0.22186         
       2020 12  5  59188       0.1079      0.2504     -0.22170         
       2020 12  6  59189       0.1060      0.2507     -0.22168         
       2020 12  7  59190       0.1040      0.2511     -0.22195         
       2020 12  8  59191       0.1021      0.2515     -0.22248         
       2020 12  9  59192       0.1001      0.2519     -0.22326         
       2020 12 10  59193       0.0982      0.2523     -0.22428         
       2020 12 11  59194       0.0963      0.2528     -0.22531         
       2020 12 12  59195       0.0944      0.2533     -0.22627         
       2020 12 13  59196       0.0924      0.2538     -0.22705         
       2020 12 14  59197       0.0905      0.2544     -0.22756         
       2020 12 15  59198       0.0887      0.2550     -0.22778         
       2020 12 16  59199       0.0868      0.2556     -0.22789         
       2020 12 17  59200       0.0849      0.2562     -0.22790         
       2020 12 18  59201       0.0830      0.2569     -0.22791         
       2020 12 19  59202       0.0812      0.2576     -0.22806         
       2020 12 20  59203       0.0794      0.2584     -0.22835         
       2020 12 21  59204       0.0775      0.2591     -0.22877         
       2020 12 22  59205       0.0757      0.2599     -0.22926         
       2020 12 23  59206       0.0739      0.2608     -0.22979         
       2020 12 24  59207       0.0721      0.2616     -0.23035         
       2020 12 25  59208       0.0704      0.2625     -0.23086         
       2020 12 26  59209       0.0686      0.2634     -0.23121         
       2020 12 27  59210       0.0669      0.2643     -0.23139         
       2020 12 28  59211       0.0652      0.2653     -0.23141         
       2020 12 29  59212       0.0635      0.2663     -0.23126         
       2020 12 30  59213       0.0618      0.2673     -0.23105         
       2020 12 31  59214       0.0601      0.2684     -0.23086         
       2021  1  1  59215       0.0585      0.2694     -0.23076         
       2021  1  2  59216       0.0568      0.2705     -0.23089         
       2021  1  3  59217       0.0552      0.2717     -0.23120         
       2021  1  4  59218       0.0536      0.2728     -0.23166         
       2021  1  5  59219       0.0521      0.2740     -0.23232         
       2021  1  6  59220       0.0505      0.2752     -0.23318         
       2021  1  7  59221       0.0490      0.2764     -0.23410         
       2021  1  8  59222       0.0475      0.2776     -0.23497         
       2021  1  9  59223       0.0460      0.2789     -0.23575         
       2021  1 10  59224       0.0446      0.2802     -0.23634         
       2021  1 11  59225       0.0431      0.2815     -0.23671         
       2021  1 12  59226       0.0417      0.2828     -0.23691         
       2021  1 13  59227       0.0403      0.2842     -0.23702         
       2021  1 14  59228       0.0390      0.2856     -0.23714         
       2021  1 15  59229       0.0376      0.2870     -0.23735         
       2021  1 16  59230       0.0363      0.2884     -0.23770         
       2021  1 17  59231       0.0350      0.2899     -0.23817         
       2021  1 18  59232       0.0338      0.2913     -0.23875         
       2021  1 19  59233       0.0326      0.2928     -0.23938         
       2021  1 20  59234       0.0314      0.2943     -0.24002         
       2021  1 21  59235       0.0302      0.2958     -0.24061         
       2021  1 22  59236       0.0290      0.2974     -0.24103         
       2021  1 23  59237       0.0279      0.2989     -0.24132         
       2021  1 24  59238       0.0268      0.3005     -0.24150         
       2021  1 25  59239       0.0258      0.3021     -0.24155         
       2021  1 26  59240       0.0247      0.3037     -0.24146         
       2021  1 27  59241       0.0237      0.3053     -0.24139         
       2021  1 28  59242       0.0228      0.3070     -0.24146         
       2021  1 29  59243       0.0218      0.3086     -0.24161         
       2021  1 30  59244       0.0209      0.3103     -0.24195         
       2021  1 31  59245       0.0200      0.3120     -0.24251         
       2021  2  1  59246       0.0192      0.3137     -0.24326         
       2021  2  2  59247       0.0183      0.3154     -0.24412         
       2021  2  3  59248       0.0176      0.3171     -0.24505         
       2021  2  4  59249       0.0168      0.3189     -0.24598         
       2021  2  5  59250       0.0161      0.3206     -0.24679         
       2021  2  6  59251       0.0154      0.3224     -0.24743         
       2021  2  7  59252       0.0147      0.3242     -0.24788         
       2021  2  8  59253       0.0141      0.3259     -0.24814         
       2021  2  9  59254       0.0135      0.3277     -0.24830         
       2021  2 10  59255       0.0130      0.3295     -0.24848         
       2021  2 11  59256       0.0124      0.3314     -0.24882         
       2021  2 12  59257       0.0120      0.3332     -0.24927         
       2021  2 13  59258       0.0115      0.3350     -0.24986         
       2021  2 14  59259       0.0111      0.3368     -0.25060         
       2021  2 15  59260       0.0107      0.3387     -0.25150         
       2021  2 16  59261       0.0103      0.3405     -0.25249         
       2021  2 17  59262       0.0100      0.3424     -0.25345         
       2021  2 18  59263       0.0097      0.3442     -0.25433         
       2021  2 19  59264       0.0095      0.3461     -0.25510         
       2021  2 20  59265       0.0093      0.3480     -0.25572         
       2021  2 21  59266       0.0091      0.3498     -0.25625         
       2021  2 22  59267       0.0089      0.3517     -0.25672         
       2021  2 23  59268       0.0088      0.3536     -0.25720         
       2021  2 24  59269       0.0088      0.3555     -0.25776         
       2021  2 25  59270       0.0087      0.3574     -0.25843         
       2021  2 26  59271       0.0087      0.3592     -0.25934         
       2021  2 27  59272       0.0087      0.3611     -0.26052         
       2021  2 28  59273       0.0088      0.3630     -0.26193         
       2021  3  1  59274       0.0089      0.3649     -0.26355         
       2021  3  2  59275       0.0091      0.3668     -0.26525         
       2021  3  3  59276       0.0092      0.3686     -0.26687         
       2021  3  4  59277       0.0094      0.3705     -0.26832         
       2021  3  5  59278       0.0097      0.3724     -0.26958         
       2021  3  6  59279       0.0100      0.3742     -0.27059         
       2021  3  7  59280       0.0103      0.3761     -0.27138         
       2021  3  8  59281       0.0106      0.3780     -0.27206         
       2021  3  9  59282       0.0110      0.3798     -0.27272         
       2021  3 10  59283       0.0114      0.3817     -0.27343         
       2021  3 11  59284       0.0119      0.3835     -0.27428         
       2021  3 12  59285       0.0124      0.3853     -0.27530         
       2021  3 13  59286       0.0129      0.3872     -0.27651         
       2021  3 14  59287       0.0134      0.3890     -0.27785         
       2021  3 15  59288       0.0140      0.3908     -0.27924         
       2021  3 16  59289       0.0147      0.3926     -0.28057         
       2021  3 17  59290       0.0153      0.3944     -0.28182         
       2021  3 18  59291       0.0160      0.3962     -0.28298         
       2021  3 19  59292       0.0167      0.3979     -0.28394         
       2021  3 20  59293       0.0175      0.3997     -0.28476         
       2021  3 21  59294       0.0183      0.4014     -0.28546         
       2021  3 22  59295       0.0191      0.4032     -0.28607         
       2021  3 23  59296       0.0200      0.4049     -0.28670         
       2021  3 24  59297       0.0209      0.4066     -0.28742         
       2021  3 25  59298       0.0218      0.4083     -0.28832         
       2021  3 26  59299       0.0228      0.4100     -0.28948         
       2021  3 27  59300       0.0237      0.4117     -0.29092         
       2021  3 28  59301       0.0248      0.4133     -0.29259         
       2021  3 29  59302       0.0258      0.4149     -0.29439         
       2021  3 30  59303       0.0269      0.4166     -0.29621         
       2021  3 31  59304       0.0280      0.4182     -0.29794         
       2021  4  1  59305       0.0292      0.4198     -0.29943         
       2021  4  2  59306       0.0303      0.4213     -0.30070         
       2021  4  3  59307       0.0316      0.4229     -0.30174         
       2021  4  4  59308       0.0328      0.4244     -0.30259         
       2021  4  5  59309       0.0341      0.4259     -0.30334         
       2021  4  6  59310       0.0353      0.4274     -0.30408         
       2021  4  7  59311       0.0367      0.4289     -0.30490         
       2021  4  8  59312       0.0380      0.4303     -0.30588         
       2021  4  9  59313       0.0394      0.4318     -0.30699         
       2021  4 10  59314       0.0408      0.4332     -0.30823         
       2021  4 11  59315       0.0422      0.4346     -0.30952         
       2021  4 12  59316       0.0437      0.4359     -0.31075         
       2021  4 13  59317       0.0452      0.4373     -0.31190         
       2021  4 14  59318       0.0467      0.4386     -0.31289         
       2021  4 15  59319       0.0482      0.4399     -0.31370         
       2021  4 16  59320       0.0498      0.4412     -0.31436         
      These predictions are based on all announced leap seconds.               
                                                                               
    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).          
