********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 22 April 2021 Vol. XXXIV No. 016 ______________________________________________________________________ GENERAL INFORMATION: To receive this information electronically, contact: ser7@maia.usno.navy.mil or use 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 * * * * The US Naval Observatory's Rapid Service/Prediction Center website * * (maia.usno.navy.mil) must undergo modernization and has been * * offline since 24 October 2019. The expected completion of work and * * return of service will be no earlier than Summer of 2021. * * * * Although the Bulletin A makes several references to maia, the * * paragraph above supersedes any information contained in the * * Bulletin A text. * * * * Updated EOPs are available at NASA's Archive of Space Geodesy Data: * * https://cddis.nasa.gov/archive/products/iers * * ftps://gdc.cddis.eosdis.nasa.gov/products/iers * * Daily EOP data may be available here by 18:00 UTC, and Bulletin A * * EOP data may be available by 20:00 UTC. * * For additional information on accessing CDDIS, please refer to: * * https://cddis.nasa.gov/About/CDDIS_File_Download_FAQ.html * * * * Updated EOPs may also 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. * * * * Users should verify results obtained from these sites; we cannot * * guarantee the integrity or timeliness of files provided at * * third-party sites. * * * * 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 . 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 4 16 59320 0.09018 .00009 0.42382 .00009 -0.177990 0.000019 21 4 17 59321 0.09213 .00009 0.42441 .00009 -0.178013 0.000019 21 4 18 59322 0.09417 .00009 0.42524 .00009 -0.177970 0.000015 21 4 19 59323 0.09588 .00009 0.42628 .00009 -0.177872 0.000012 21 4 20 59324 0.09722 .00009 0.42756 .00009 -0.177773 0.000011 21 4 21 59325 0.09821 .00009 0.42889 .00009 -0.177749 0.000012 21 4 22 59326 0.09897 .00009 0.43015 .00009 -0.177896 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 = 0.1258 - 0.0466 cos A + 0.1015 sin A + 0.0176 cos C - 0.0282 sin C y = 0.3623 + 0.0928 cos A + 0.0451 sin A - 0.0282 cos C - 0.0176 sin C UT1-UTC = -0.1462 + 0.00026 (MJD - 59334) - (UT2-UT1) where A = 2*pi*(MJD-59326)/365.25 and C = 2*pi*(MJD-59326)/435. TAI-UTC(MJD 59327) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59326)**0.80 S t = 0.00025 (MJD-59326)**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 4 23 59327 0.0997 0.4312 -0.17827 2021 4 24 59328 0.1006 0.4321 -0.17889 2021 4 25 59329 0.1016 0.4328 -0.17974 2021 4 26 59330 0.1029 0.4334 -0.18072 2021 4 27 59331 0.1042 0.4340 -0.18165 2021 4 28 59332 0.1056 0.4345 -0.18238 2021 4 29 59333 0.1071 0.4351 -0.18281 2021 4 30 59334 0.1086 0.4357 -0.18295 2021 5 1 59335 0.1102 0.4362 -0.18286 2021 5 2 59336 0.1117 0.4367 -0.18269 2021 5 3 59337 0.1132 0.4372 -0.18251 2021 5 4 59338 0.1147 0.4377 -0.18241 2021 5 5 59339 0.1162 0.4382 -0.18244 2021 5 6 59340 0.1177 0.4386 -0.18260 2021 5 7 59341 0.1191 0.4390 -0.18287 2021 5 8 59342 0.1205 0.4394 -0.18318 2021 5 9 59343 0.1219 0.4396 -0.18346 2021 5 10 59344 0.1234 0.4399 -0.18366 2021 5 11 59345 0.1249 0.4400 -0.18374 2021 5 12 59346 0.1265 0.4402 -0.18365 2021 5 13 59347 0.1281 0.4403 -0.18339 2021 5 14 59348 0.1297 0.4405 -0.18294 2021 5 15 59349 0.1312 0.4406 -0.18234 2021 5 16 59350 0.1328 0.4408 -0.18164 2021 5 17 59351 0.1344 0.4409 -0.18089 2021 5 18 59352 0.1359 0.4410 -0.18018 2021 5 19 59353 0.1375 0.4410 -0.17959 2021 5 20 59354 0.1390 0.4410 -0.17920 2021 5 21 59355 0.1406 0.4410 -0.17902 2021 5 22 59356 0.1421 0.4410 -0.17906 2021 5 23 59357 0.1437 0.4410 -0.17924 2021 5 24 59358 0.1453 0.4409 -0.17946 2021 5 25 59359 0.1469 0.4408 -0.17955 2021 5 26 59360 0.1485 0.4407 -0.17939 2021 5 27 59361 0.1501 0.4405 -0.17895 2021 5 28 59362 0.1517 0.4404 -0.17824 2021 5 29 59363 0.1533 0.4402 -0.17738 2021 5 30 59364 0.1548 0.4400 -0.17647 2021 5 31 59365 0.1564 0.4398 -0.17562 2021 6 1 59366 0.1580 0.4395 -0.17487 2021 6 2 59367 0.1596 0.4392 -0.17424 2021 6 3 59368 0.1612 0.4389 -0.17370 2021 6 4 59369 0.1628 0.4386 -0.17320 2021 6 5 59370 0.1643 0.4382 -0.17271 2021 6 6 59371 0.1659 0.4378 -0.17218 2021 6 7 59372 0.1675 0.4374 -0.17156 2021 6 8 59373 0.1690 0.4370 -0.17081 2021 6 9 59374 0.1706 0.4365 -0.16992 2021 6 10 59375 0.1722 0.4361 -0.16887 2021 6 11 59376 0.1737 0.4356 -0.16769 2021 6 12 59377 0.1752 0.4350 -0.16642 2021 6 13 59378 0.1768 0.4345 -0.16514 2021 6 14 59379 0.1783 0.4339 -0.16390 2021 6 15 59380 0.1798 0.4333 -0.16278 2021 6 16 59381 0.1813 0.4326 -0.16184 2021 6 17 59382 0.1828 0.4320 -0.16110 2021 6 18 59383 0.1843 0.4313 -0.16057 2021 6 19 59384 0.1858 0.4306 -0.16020 2021 6 20 59385 0.1872 0.4299 -0.15991 2021 6 21 59386 0.1887 0.4291 -0.15956 2021 6 22 59387 0.1901 0.4283 -0.15904 2021 6 23 59388 0.1916 0.4275 -0.15827 2021 6 24 59389 0.1930 0.4267 -0.15723 2021 6 25 59390 0.1944 0.4259 -0.15601 2021 6 26 59391 0.1958 0.4250 -0.15471 2021 6 27 59392 0.1972 0.4241 -0.15345 2021 6 28 59393 0.1985 0.4232 -0.15231 2021 6 29 59394 0.1999 0.4223 -0.15131 2021 6 30 59395 0.2012 0.4213 -0.15044 2021 7 1 59396 0.2025 0.4203 -0.14964 2021 7 2 59397 0.2038 0.4193 -0.14885 2021 7 3 59398 0.2051 0.4183 -0.14803 2021 7 4 59399 0.2064 0.4173 -0.14711 2021 7 5 59400 0.2076 0.4162 -0.14606 2021 7 6 59401 0.2088 0.4151 -0.14485 2021 7 7 59402 0.2100 0.4140 -0.14349 2021 7 8 59403 0.2112 0.4129 -0.14199 2021 7 9 59404 0.2124 0.4118 -0.14039 2021 7 10 59405 0.2136 0.4106 -0.13876 2021 7 11 59406 0.2147 0.4094 -0.13717 2021 7 12 59407 0.2158 0.4082 -0.13571 2021 7 13 59408 0.2169 0.4070 -0.13443 2021 7 14 59409 0.2180 0.4058 -0.13337 2021 7 15 59410 0.2190 0.4045 -0.13252 2021 7 16 59411 0.2201 0.4032 -0.13185 2021 7 17 59412 0.2211 0.4020 -0.13127 2021 7 18 59413 0.2221 0.4007 -0.13068 2021 7 19 59414 0.2230 0.3993 -0.12997 2021 7 20 59415 0.2240 0.3980 -0.12906 2021 7 21 59416 0.2249 0.3966 -0.12792 2021 7 22 59417 0.2258 0.3953 -0.12659 2021 7 23 59418 0.2266 0.3939 -0.12517 2021 7 24 59419 0.2275 0.3925 -0.12377 2021 7 25 59420 0.2283 0.3911 -0.12249 2021 7 26 59421 0.2291 0.3897 -0.12139 2021 7 27 59422 0.2298 0.3882 -0.12046 2021 7 28 59423 0.2306 0.3868 -0.11964 2021 7 29 59424 0.2313 0.3853 -0.11889 2021 7 30 59425 0.2320 0.3838 -0.11811 2021 7 31 59426 0.2326 0.3823 -0.11726 2021 8 1 59427 0.2333 0.3808 -0.11630 2021 8 2 59428 0.2339 0.3793 -0.11519 2021 8 3 59429 0.2345 0.3778 -0.11394 2021 8 4 59430 0.2350 0.3763 -0.11256 2021 8 5 59431 0.2355 0.3747 -0.11109 2021 8 6 59432 0.2360 0.3732 -0.10958 2021 8 7 59433 0.2365 0.3716 -0.10810 2021 8 8 59434 0.2369 0.3700 -0.10674 2021 8 9 59435 0.2374 0.3684 -0.10554 2021 8 10 59436 0.2377 0.3669 -0.10457 2021 8 11 59437 0.2381 0.3653 -0.10384 2021 8 12 59438 0.2384 0.3637 -0.10331 2021 8 13 59439 0.2387 0.3621 -0.10290 2021 8 14 59440 0.2390 0.3604 -0.10248 2021 8 15 59441 0.2392 0.3588 -0.10197 2021 8 16 59442 0.2394 0.3572 -0.10127 2021 8 17 59443 0.2396 0.3556 -0.10035 2021 8 18 59444 0.2398 0.3539 -0.09926 2021 8 19 59445 0.2399 0.3523 -0.09805 2021 8 20 59446 0.2400 0.3507 -0.09685 2021 8 21 59447 0.2400 0.3490 -0.09575 2021 8 22 59448 0.2400 0.3474 -0.09483 2021 8 23 59449 0.2400 0.3457 -0.09410 2021 8 24 59450 0.2400 0.3441 -0.09354 2021 8 25 59451 0.2399 0.3424 -0.09308 2021 8 26 59452 0.2398 0.3408 -0.09264 2021 8 27 59453 0.2397 0.3392 -0.09216 2021 8 28 59454 0.2396 0.3375 -0.09157 2021 8 29 59455 0.2394 0.3359 -0.09084 2021 8 30 59456 0.2392 0.3342 -0.08997 2021 8 31 59457 0.2389 0.3326 -0.08896 2021 9 1 59458 0.2386 0.3309 -0.08785 2021 9 2 59459 0.2383 0.3293 -0.08670 2021 9 3 59460 0.2380 0.3277 -0.08556 2021 9 4 59461 0.2376 0.3260 -0.08453 2021 9 5 59462 0.2372 0.3244 -0.08367 2021 9 6 59463 0.2368 0.3228 -0.08305 2021 9 7 59464 0.2363 0.3212 -0.08270 2021 9 8 59465 0.2358 0.3196 -0.08260 2021 9 9 59466 0.2353 0.3180 -0.08266 2021 9 10 59467 0.2348 0.3164 -0.08276 2021 9 11 59468 0.2342 0.3148 -0.08277 2021 9 12 59469 0.2336 0.3132 -0.08260 2021 9 13 59470 0.2329 0.3116 -0.08219 2021 9 14 59471 0.2323 0.3101 -0.08159 2021 9 15 59472 0.2315 0.3085 -0.08085 2021 9 16 59473 0.2308 0.3070 -0.08009 2021 9 17 59474 0.2301 0.3054 -0.07941 2021 9 18 59475 0.2293 0.3039 -0.07889 2021 9 19 59476 0.2285 0.3024 -0.07857 2021 9 20 59477 0.2276 0.3009 -0.07843 2021 9 21 59478 0.2267 0.2994 -0.07843 2021 9 22 59479 0.2258 0.2979 -0.07848 2021 9 23 59480 0.2249 0.2965 -0.07852 2021 9 24 59481 0.2239 0.2950 -0.07847 2021 9 25 59482 0.2229 0.2936 -0.07829 2021 9 26 59483 0.2219 0.2922 -0.07796 2021 9 27 59484 0.2209 0.2907 -0.07747 2021 9 28 59485 0.2198 0.2893 -0.07687 2021 9 29 59486 0.2187 0.2880 -0.07620 2021 9 30 59487 0.2176 0.2866 -0.07552 2021 10 1 59488 0.2165 0.2853 -0.07490 2021 10 2 59489 0.2153 0.2839 -0.07443 2021 10 3 59490 0.2141 0.2826 -0.07417 2021 10 4 59491 0.2129 0.2813 -0.07418 2021 10 5 59492 0.2116 0.2800 -0.07446 2021 10 6 59493 0.2103 0.2788 -0.07497 2021 10 7 59494 0.2090 0.2775 -0.07557 2021 10 8 59495 0.2077 0.2763 -0.07614 2021 10 9 59496 0.2064 0.2751 -0.07653 2021 10 10 59497 0.2050 0.2739 -0.07668 2021 10 11 59498 0.2036 0.2728 -0.07658 2021 10 12 59499 0.2022 0.2716 -0.07630 2021 10 13 59500 0.2007 0.2705 -0.07595 2021 10 14 59501 0.1993 0.2694 -0.07565 2021 10 15 59502 0.1978 0.2683 -0.07549 2021 10 16 59503 0.1963 0.2673 -0.07550 2021 10 17 59504 0.1948 0.2662 -0.07570 2021 10 18 59505 0.1932 0.2652 -0.07603 2021 10 19 59506 0.1916 0.2642 -0.07644 2021 10 20 59507 0.1901 0.2632 -0.07685 2021 10 21 59508 0.1885 0.2623 -0.07719 2021 10 22 59509 0.1868 0.2614 -0.07741 2021 10 23 59510 0.1852 0.2605 -0.07747 2021 10 24 59511 0.1835 0.2596 -0.07737 2021 10 25 59512 0.1819 0.2588 -0.07713 2021 10 26 59513 0.1802 0.2579 -0.07679 2021 10 27 59514 0.1784 0.2571 -0.07643 2021 10 28 59515 0.1767 0.2564 -0.07611 2021 10 29 59516 0.1750 0.2556 -0.07591 2021 10 30 59517 0.1732 0.2549 -0.07590 2021 10 31 59518 0.1714 0.2542 -0.07614 2021 11 1 59519 0.1697 0.2535 -0.07664 2021 11 2 59520 0.1678 0.2529 -0.07739 2021 11 3 59521 0.1660 0.2523 -0.07830 2021 11 4 59522 0.1642 0.2517 -0.07923 2021 11 5 59523 0.1624 0.2511 -0.08004 2021 11 6 59524 0.1605 0.2506 -0.08060 2021 11 7 59525 0.1586 0.2501 -0.08087 2021 11 8 59526 0.1568 0.2496 -0.08090 2021 11 9 59527 0.1549 0.2492 -0.08080 2021 11 10 59528 0.1530 0.2488 -0.08068 2021 11 11 59529 0.1511 0.2484 -0.08064 2021 11 12 59530 0.1492 0.2480 -0.08073 2021 11 13 59531 0.1472 0.2477 -0.08096 2021 11 14 59532 0.1453 0.2474 -0.08127 2021 11 15 59533 0.1434 0.2471 -0.08160 2021 11 16 59534 0.1414 0.2469 -0.08188 2021 11 17 59535 0.1395 0.2466 -0.08206 2021 11 18 59536 0.1375 0.2464 -0.08207 2021 11 19 59537 0.1356 0.2463 -0.08191 2021 11 20 59538 0.1336 0.2462 -0.08155 2021 11 21 59539 0.1316 0.2461 -0.08103 2021 11 22 59540 0.1297 0.2460 -0.08037 2021 11 23 59541 0.1277 0.2459 -0.07965 2021 11 24 59542 0.1257 0.2459 -0.07891 2021 11 25 59543 0.1237 0.2460 -0.07820 2021 11 26 59544 0.1217 0.2460 -0.07759 2021 11 27 59545 0.1198 0.2461 -0.07712 2021 11 28 59546 0.1178 0.2462 -0.07689 2021 11 29 59547 0.1158 0.2463 -0.07692 2021 11 30 59548 0.1138 0.2465 -0.07717 2021 12 1 59549 0.1118 0.2467 -0.07754 2021 12 2 59550 0.1098 0.2469 -0.07799 2021 12 3 59551 0.1079 0.2472 -0.07842 2021 12 4 59552 0.1059 0.2475 -0.07858 2021 12 5 59553 0.1039 0.2478 -0.07847 2021 12 6 59554 0.1020 0.2481 -0.07814 2021 12 7 59555 0.1000 0.2485 -0.07772 2021 12 8 59556 0.0980 0.2489 -0.07734 2021 12 9 59557 0.0961 0.2494 -0.07709 2021 12 10 59558 0.0941 0.2498 -0.07702 2021 12 11 59559 0.0922 0.2503 -0.07707 2021 12 12 59560 0.0903 0.2509 -0.07725 2021 12 13 59561 0.0884 0.2514 -0.07745 2021 12 14 59562 0.0864 0.2520 -0.07762 2021 12 15 59563 0.0845 0.2526 -0.07765 2021 12 16 59564 0.0826 0.2533 -0.07747 2021 12 17 59565 0.0808 0.2539 -0.07711 2021 12 18 59566 0.0789 0.2546 -0.07657 2021 12 19 59567 0.0770 0.2554 -0.07578 2021 12 20 59568 0.0752 0.2561 -0.07490 2021 12 21 59569 0.0733 0.2569 -0.07398 2021 12 22 59570 0.0715 0.2577 -0.07309 2021 12 23 59571 0.0697 0.2585 -0.07226 2021 12 24 59572 0.0679 0.2594 -0.07161 2021 12 25 59573 0.0661 0.2603 -0.07115 2021 12 26 59574 0.0643 0.2612 -0.07086 2021 12 27 59575 0.0626 0.2622 -0.07074 2021 12 28 59576 0.0608 0.2632 -0.07077 2021 12 29 59577 0.0591 0.2642 -0.07075 2021 12 30 59578 0.0574 0.2652 -0.07065 2021 12 31 59579 0.0557 0.2662 -0.07042 2022 1 1 59580 0.0541 0.2673 -0.07003 2022 1 2 59581 0.0524 0.2684 -0.06949 2022 1 3 59582 0.0508 0.2696 -0.06892 2022 1 4 59583 0.0492 0.2707 -0.06846 2022 1 5 59584 0.0476 0.2719 -0.06813 2022 1 6 59585 0.0460 0.2731 -0.06799 2022 1 7 59586 0.0444 0.2743 -0.06802 2022 1 8 59587 0.0429 0.2756 -0.06811 2022 1 9 59588 0.0414 0.2769 -0.06816 2022 1 10 59589 0.0399 0.2782 -0.06825 2022 1 11 59590 0.0384 0.2795 -0.06826 2022 1 12 59591 0.0370 0.2808 -0.06810 2022 1 13 59592 0.0356 0.2822 -0.06781 2022 1 14 59593 0.0342 0.2836 -0.06747 2022 1 15 59594 0.0328 0.2850 -0.06704 2022 1 16 59595 0.0314 0.2864 -0.06651 2022 1 17 59596 0.0301 0.2879 -0.06601 2022 1 18 59597 0.0288 0.2894 -0.06560 2022 1 19 59598 0.0275 0.2909 -0.06535 2022 1 20 59599 0.0263 0.2924 -0.06534 2022 1 21 59600 0.0251 0.2939 -0.06550 2022 1 22 59601 0.0239 0.2954 -0.06587 2022 1 23 59602 0.0227 0.2970 -0.06641 2022 1 24 59603 0.0216 0.2986 -0.06703 2022 1 25 59604 0.0205 0.3002 -0.06771 2022 1 26 59605 0.0194 0.3018 -0.06828 2022 1 27 59606 0.0183 0.3035 -0.06862 2022 1 28 59607 0.0173 0.3051 -0.06872 2022 1 29 59608 0.0163 0.3068 -0.06852 2022 1 30 59609 0.0153 0.3085 -0.06813 2022 1 31 59610 0.0144 0.3102 -0.06768 2022 2 1 59611 0.0135 0.3119 -0.06730 2022 2 2 59612 0.0126 0.3136 -0.06713 2022 2 3 59613 0.0118 0.3154 -0.06723 2022 2 4 59614 0.0109 0.3171 -0.06750 2022 2 5 59615 0.0101 0.3189 -0.06785 2022 2 6 59616 0.0094 0.3207 -0.06822 2022 2 7 59617 0.0087 0.3225 -0.06849 2022 2 8 59618 0.0080 0.3243 -0.06856 2022 2 9 59619 0.0073 0.3261 -0.06842 2022 2 10 59620 0.0067 0.3279 -0.06813 2022 2 11 59621 0.0061 0.3297 -0.06768 2022 2 12 59622 0.0055 0.3316 -0.06708 2022 2 13 59623 0.0050 0.3334 -0.06638 2022 2 14 59624 0.0045 0.3353 -0.06566 2022 2 15 59625 0.0040 0.3372 -0.06505 2022 2 16 59626 0.0036 0.3390 -0.06459 2022 2 17 59627 0.0032 0.3409 -0.06440 2022 2 18 59628 0.0028 0.3428 -0.06452 2022 2 19 59629 0.0025 0.3447 -0.06485 2022 2 20 59630 0.0022 0.3466 -0.06535 2022 2 21 59631 0.0019 0.3485 -0.06591 2022 2 22 59632 0.0017 0.3504 -0.06643 2022 2 23 59633 0.0015 0.3523 -0.06675 2022 2 24 59634 0.0014 0.3543 -0.06688 2022 2 25 59635 0.0012 0.3562 -0.06684 2022 2 26 59636 0.0011 0.3581 -0.06667 2022 2 27 59637 0.0011 0.3600 -0.06648 2022 2 28 59638 0.0010 0.3620 -0.06639 2022 3 1 59639 0.0011 0.3639 -0.06656 2022 3 2 59640 0.0011 0.3658 -0.06697 2022 3 3 59641 0.0012 0.3677 -0.06755 2022 3 4 59642 0.0013 0.3697 -0.06826 2022 3 5 59643 0.0014 0.3716 -0.06898 2022 3 6 59644 0.0016 0.3735 -0.06960 2022 3 7 59645 0.0018 0.3754 -0.07006 2022 3 8 59646 0.0021 0.3773 -0.07036 2022 3 9 59647 0.0024 0.3792 -0.07048 2022 3 10 59648 0.0027 0.3812 -0.07045 2022 3 11 59649 0.0030 0.3831 -0.07029 2022 3 12 59650 0.0034 0.3850 -0.07017 2022 3 13 59651 0.0038 0.3868 -0.07003 2022 3 14 59652 0.0043 0.3887 -0.06996 2022 3 15 59653 0.0048 0.3906 -0.07006 2022 3 16 59654 0.0053 0.3925 -0.07030 2022 3 17 59655 0.0059 0.3944 -0.07071 2022 3 18 59656 0.0065 0.3962 -0.07131 2022 3 19 59657 0.0071 0.3981 -0.07216 2022 3 20 59658 0.0077 0.3999 -0.07322 2022 3 21 59659 0.0084 0.4017 -0.07426 2022 3 22 59660 0.0091 0.4035 -0.07526 2022 3 23 59661 0.0099 0.4054 -0.07605 2022 3 24 59662 0.0107 0.4072 -0.07662 2022 3 25 59663 0.0115 0.4089 -0.07702 2022 3 26 59664 0.0124 0.4107 -0.07731 2022 3 27 59665 0.0132 0.4125 -0.07766 2022 3 28 59666 0.0141 0.4142 -0.07820 2022 3 29 59667 0.0151 0.4160 -0.07896 2022 3 30 59668 0.0161 0.4177 -0.07994 2022 3 31 59669 0.0171 0.4194 -0.08108 2022 4 1 59670 0.0181 0.4211 -0.08228 2022 4 2 59671 0.0192 0.4228 -0.08351 2022 4 3 59672 0.0203 0.4244 -0.08463 2022 4 4 59673 0.0214 0.4261 -0.08564 2022 4 5 59674 0.0226 0.4277 -0.08642 2022 4 6 59675 0.0238 0.4293 -0.08697 2022 4 7 59676 0.0250 0.4309 -0.08739 2022 4 8 59677 0.0262 0.4325 -0.08772 2022 4 9 59678 0.0275 0.4340 -0.08803 2022 4 10 59679 0.0288 0.4355 -0.08840 2022 4 11 59680 0.0301 0.4371 -0.08885 2022 4 12 59681 0.0315 0.4386 -0.08952 2022 4 13 59682 0.0329 0.4400 -0.09034 2022 4 14 59683 0.0343 0.4415 -0.09133 2022 4 15 59684 0.0357 0.4429 -0.09253 2022 4 16 59685 0.0372 0.4443 -0.09382 2022 4 17 59686 0.0387 0.4457 -0.09519 2022 4 18 59687 0.0402 0.4471 -0.09644 2022 4 19 59688 0.0417 0.4484 -0.09742 2022 4 20 59689 0.0433 0.4498 -0.09814 2022 4 21 59690 0.0449 0.4511 -0.09864 2022 4 22 59691 0.0465 0.4523 -0.09890 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) 59304 -106.26 1.00 -8.86 0.06 59305 -106.58 1.00 -9.07 0.06 59306 -106.52 1.00 -9.11 0.06 59307 -106.30 1.03 -9.05 0.06 59308 -106.18 1.03 -9.00 0.06 59309 -106.20 0.42 -9.00 0.14 59310 -106.23 0.42 -9.03 0.14 59311 -106.15 0.42 -9.08 0.14 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59304 0.385 0.397 -0.051 0.058 59305 0.391 0.397 -0.047 0.058 59306 0.384 0.397 -0.036 0.058 59307 0.362 0.411 -0.017 0.057 59308 0.330 0.411 0.008 0.057 59309 0.289 0.169 0.037 0.143 59310 0.243 0.169 0.069 0.143 59311 0.193 0.169 0.102 0.143 The recommended software to predict celestial pole offsets can be found at and software for the calculation of the dX and dY components with respect to IAU2000A Nutation/Precession Theory can be found at the web site in Chapter 5 Section 5.5 of the IERS Conventions (2010).