********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 4 March 2021 Vol. XXXIV No. 009 ______________________________________________________________________ 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 2 26 59271 0.05022 .00009 0.36714 .00009 -0.169063 0.000007 21 2 27 59272 0.05042 .00009 0.36856 .00009 -0.169040 0.000007 21 2 28 59273 0.05050 .00009 0.37023 .00009 -0.169289 0.000007 21 3 1 59274 0.05061 .00009 0.37199 .00009 -0.169778 0.000007 21 3 2 59275 0.05066 .00009 0.37371 .00009 -0.170391 0.000007 21 3 3 59276 0.05071 .00009 0.37522 .00009 -0.171016 0.000008 21 3 4 59277 0.05104 .00009 0.37658 .00009 -0.171550 0.000009 _______________________________________________________________________ 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 = 0.1232 - 0.1045 cos A + 0.0287 sin A + 0.0269 cos C - 0.0085 sin C y = 0.3590 + 0.0255 cos A + 0.0957 sin A - 0.0085 cos C - 0.0269 sin C UT1-UTC = -0.1575 + 0.00020 (MJD - 59285) - (UT2-UT1) where A = 2*pi*(MJD-59277)/365.25 and C = 2*pi*(MJD-59277)/435. TAI-UTC(MJD 59278) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59277)**0.80 S t = 0.00025 (MJD-59277)**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 3 5 59278 0.0514 0.3779 -0.17184 2021 3 6 59279 0.0519 0.3792 -0.17187 2021 3 7 59280 0.0523 0.3806 -0.17170 2021 3 8 59281 0.0527 0.3820 -0.17140 2021 3 9 59282 0.0530 0.3834 -0.17108 2021 3 10 59283 0.0533 0.3847 -0.17083 2021 3 11 59284 0.0536 0.3860 -0.17069 2021 3 12 59285 0.0539 0.3873 -0.17072 2021 3 13 59286 0.0543 0.3885 -0.17088 2021 3 14 59287 0.0548 0.3897 -0.17116 2021 3 15 59288 0.0552 0.3910 -0.17149 2021 3 16 59289 0.0557 0.3922 -0.17183 2021 3 17 59290 0.0562 0.3935 -0.17210 2021 3 18 59291 0.0567 0.3947 -0.17224 2021 3 19 59292 0.0573 0.3959 -0.17222 2021 3 20 59293 0.0579 0.3971 -0.17205 2021 3 21 59294 0.0584 0.3983 -0.17175 2021 3 22 59295 0.0591 0.3995 -0.17137 2021 3 23 59296 0.0597 0.4007 -0.17102 2021 3 24 59297 0.0604 0.4019 -0.17078 2021 3 25 59298 0.0611 0.4030 -0.17076 2021 3 26 59299 0.0618 0.4042 -0.17102 2021 3 27 59300 0.0625 0.4053 -0.17160 2021 3 28 59301 0.0633 0.4065 -0.17248 2021 3 29 59302 0.0641 0.4076 -0.17354 2021 3 30 59303 0.0649 0.4087 -0.17466 2021 3 31 59304 0.0657 0.4098 -0.17566 2021 4 1 59305 0.0666 0.4109 -0.17643 2021 4 2 59306 0.0674 0.4120 -0.17692 2021 4 3 59307 0.0683 0.4131 -0.17715 2021 4 4 59308 0.0693 0.4141 -0.17721 2021 4 5 59309 0.0702 0.4152 -0.17720 2021 4 6 59310 0.0712 0.4162 -0.17721 2021 4 7 59311 0.0722 0.4172 -0.17732 2021 4 8 59312 0.0732 0.4182 -0.17756 2021 4 9 59313 0.0742 0.4192 -0.17791 2021 4 10 59314 0.0753 0.4202 -0.17836 2021 4 11 59315 0.0764 0.4211 -0.17886 2021 4 12 59316 0.0775 0.4221 -0.17934 2021 4 13 59317 0.0786 0.4230 -0.17976 2021 4 14 59318 0.0798 0.4239 -0.18005 2021 4 15 59319 0.0809 0.4248 -0.18018 2021 4 16 59320 0.0821 0.4257 -0.18016 2021 4 17 59321 0.0833 0.4266 -0.17999 2021 4 18 59322 0.0846 0.4274 -0.17972 2021 4 19 59323 0.0858 0.4282 -0.17940 2021 4 20 59324 0.0871 0.4291 -0.17911 2021 4 21 59325 0.0884 0.4299 -0.17892 2021 4 22 59326 0.0897 0.4306 -0.17893 2021 4 23 59327 0.0910 0.4314 -0.17919 2021 4 24 59328 0.0923 0.4321 -0.17971 2021 4 25 59329 0.0937 0.4328 -0.18046 2021 4 26 59330 0.0951 0.4335 -0.18132 2021 4 27 59331 0.0964 0.4342 -0.18213 2021 4 28 59332 0.0979 0.4349 -0.18275 2021 4 29 59333 0.0993 0.4355 -0.18310 2021 4 30 59334 0.1007 0.4361 -0.18316 2021 5 1 59335 0.1022 0.4367 -0.18300 2021 5 2 59336 0.1036 0.4373 -0.18274 2021 5 3 59337 0.1051 0.4378 -0.18249 2021 5 4 59338 0.1066 0.4384 -0.18231 2021 5 5 59339 0.1081 0.4389 -0.18225 2021 5 6 59340 0.1096 0.4394 -0.18231 2021 5 7 59341 0.1111 0.4398 -0.18246 2021 5 8 59342 0.1127 0.4403 -0.18266 2021 5 9 59343 0.1142 0.4407 -0.18285 2021 5 10 59344 0.1158 0.4411 -0.18297 2021 5 11 59345 0.1174 0.4415 -0.18297 2021 5 12 59346 0.1189 0.4418 -0.18283 2021 5 13 59347 0.1205 0.4421 -0.18252 2021 5 14 59348 0.1221 0.4424 -0.18204 2021 5 15 59349 0.1237 0.4427 -0.18144 2021 5 16 59350 0.1254 0.4430 -0.18076 2021 5 17 59351 0.1270 0.4432 -0.18007 2021 5 18 59352 0.1286 0.4434 -0.17944 2021 5 19 59353 0.1302 0.4436 -0.17895 2021 5 20 59354 0.1319 0.4437 -0.17867 2021 5 21 59355 0.1335 0.4438 -0.17862 2021 5 22 59356 0.1352 0.4439 -0.17882 2021 5 23 59357 0.1368 0.4440 -0.17917 2021 5 24 59358 0.1385 0.4441 -0.17956 2021 5 25 59359 0.1402 0.4441 -0.17982 2021 5 26 59360 0.1418 0.4441 -0.17984 2021 5 27 59361 0.1435 0.4441 -0.17956 2021 5 28 59362 0.1452 0.4440 -0.17902 2021 5 29 59363 0.1468 0.4440 -0.17830 2021 5 30 59364 0.1485 0.4439 -0.17754 2021 5 31 59365 0.1502 0.4437 -0.17684 2021 6 1 59366 0.1518 0.4436 -0.17624 2021 6 2 59367 0.1535 0.4434 -0.17575 2021 6 3 59368 0.1552 0.4432 -0.17535 2021 6 4 59369 0.1569 0.4430 -0.17500 2021 6 5 59370 0.1585 0.4427 -0.17465 2021 6 6 59371 0.1602 0.4425 -0.17423 2021 6 7 59372 0.1618 0.4422 -0.17371 2021 6 8 59373 0.1635 0.4418 -0.17303 2021 6 9 59374 0.1651 0.4415 -0.17219 2021 6 10 59375 0.1668 0.4411 -0.17119 2021 6 11 59376 0.1684 0.4407 -0.17004 2021 6 12 59377 0.1701 0.4403 -0.16879 2021 6 13 59378 0.1717 0.4398 -0.16752 2021 6 14 59379 0.1733 0.4393 -0.16628 2021 6 15 59380 0.1749 0.4388 -0.16516 2021 6 16 59381 0.1765 0.4383 -0.16420 2021 6 17 59382 0.1781 0.4377 -0.16346 2021 6 18 59383 0.1797 0.4371 -0.16292 2021 6 19 59384 0.1813 0.4365 -0.16254 2021 6 20 59385 0.1828 0.4359 -0.16225 2021 6 21 59386 0.1844 0.4353 -0.16192 2021 6 22 59387 0.1859 0.4346 -0.16141 2021 6 23 59388 0.1875 0.4339 -0.16066 2021 6 24 59389 0.1890 0.4331 -0.15965 2021 6 25 59390 0.1905 0.4324 -0.15846 2021 6 26 59391 0.1920 0.4316 -0.15718 2021 6 27 59392 0.1935 0.4308 -0.15595 2021 6 28 59393 0.1950 0.4300 -0.15484 2021 6 29 59394 0.1964 0.4291 -0.15388 2021 6 30 59395 0.1978 0.4283 -0.15304 2021 7 1 59396 0.1993 0.4274 -0.15227 2021 7 2 59397 0.2007 0.4265 -0.15152 2021 7 3 59398 0.2021 0.4255 -0.15072 2021 7 4 59399 0.2034 0.4246 -0.14984 2021 7 5 59400 0.2048 0.4236 -0.14882 2021 7 6 59401 0.2061 0.4226 -0.14764 2021 7 7 59402 0.2075 0.4216 -0.14632 2021 7 8 59403 0.2088 0.4205 -0.14485 2021 7 9 59404 0.2101 0.4195 -0.14330 2021 7 10 59405 0.2113 0.4184 -0.14171 2021 7 11 59406 0.2126 0.4173 -0.14017 2021 7 12 59407 0.2138 0.4162 -0.13874 2021 7 13 59408 0.2150 0.4150 -0.13749 2021 7 14 59409 0.2162 0.4138 -0.13646 2021 7 15 59410 0.2173 0.4127 -0.13564 2021 7 16 59411 0.2185 0.4115 -0.13499 2021 7 17 59412 0.2196 0.4102 -0.13444 2021 7 18 59413 0.2207 0.4090 -0.13387 2021 7 19 59414 0.2218 0.4077 -0.13317 2021 7 20 59415 0.2228 0.4065 -0.13228 2021 7 21 59416 0.2239 0.4052 -0.13116 2021 7 22 59417 0.2249 0.4039 -0.12984 2021 7 23 59418 0.2258 0.4025 -0.12843 2021 7 24 59419 0.2268 0.4012 -0.12704 2021 7 25 59420 0.2277 0.3998 -0.12577 2021 7 26 59421 0.2286 0.3985 -0.12467 2021 7 27 59422 0.2295 0.3971 -0.12374 2021 7 28 59423 0.2304 0.3957 -0.12293 2021 7 29 59424 0.2312 0.3943 -0.12217 2021 7 30 59425 0.2320 0.3928 -0.12138 2021 7 31 59426 0.2328 0.3914 -0.12053 2021 8 1 59427 0.2335 0.3899 -0.11955 2021 8 2 59428 0.2342 0.3885 -0.11843 2021 8 3 59429 0.2349 0.3870 -0.11716 2021 8 4 59430 0.2356 0.3855 -0.11576 2021 8 5 59431 0.2362 0.3840 -0.11426 2021 8 6 59432 0.2368 0.3825 -0.11273 2021 8 7 59433 0.2374 0.3809 -0.11123 2021 8 8 59434 0.2380 0.3794 -0.10985 2021 8 9 59435 0.2385 0.3779 -0.10866 2021 8 10 59436 0.2390 0.3763 -0.10770 2021 8 11 59437 0.2394 0.3747 -0.10699 2021 8 12 59438 0.2399 0.3732 -0.10648 2021 8 13 59439 0.2403 0.3716 -0.10608 2021 8 14 59440 0.2407 0.3700 -0.10569 2021 8 15 59441 0.2410 0.3684 -0.10519 2021 8 16 59442 0.2413 0.3668 -0.10452 2021 8 17 59443 0.2416 0.3652 -0.10364 2021 8 18 59444 0.2418 0.3636 -0.10257 2021 8 19 59445 0.2421 0.3620 -0.10140 2021 8 20 59446 0.2423 0.3603 -0.10023 2021 8 21 59447 0.2424 0.3587 -0.09917 2021 8 22 59448 0.2426 0.3571 -0.09829 2021 8 23 59449 0.2427 0.3554 -0.09761 2021 8 24 59450 0.2427 0.3538 -0.09710 2021 8 25 59451 0.2428 0.3522 -0.09669 2021 8 26 59452 0.2428 0.3505 -0.09630 2021 8 27 59453 0.2427 0.3489 -0.09586 2021 8 28 59454 0.2427 0.3472 -0.09532 2021 8 29 59455 0.2426 0.3456 -0.09464 2021 8 30 59456 0.2425 0.3439 -0.09381 2021 8 31 59457 0.2423 0.3423 -0.09285 2021 9 1 59458 0.2421 0.3406 -0.09178 2021 9 2 59459 0.2419 0.3390 -0.09066 2021 9 3 59460 0.2417 0.3374 -0.08955 2021 9 4 59461 0.2414 0.3357 -0.08854 2021 9 5 59462 0.2411 0.3341 -0.08769 2021 9 6 59463 0.2408 0.3324 -0.08706 2021 9 7 59464 0.2404 0.3308 -0.08669 2021 9 8 59465 0.2400 0.3292 -0.08654 2021 9 9 59466 0.2396 0.3276 -0.08653 2021 9 10 59467 0.2391 0.3259 -0.08653 2021 9 11 59468 0.2386 0.3243 -0.08641 2021 9 12 59469 0.2381 0.3227 -0.08608 2021 9 13 59470 0.2375 0.3211 -0.08550 2021 9 14 59471 0.2369 0.3195 -0.08470 2021 9 15 59472 0.2363 0.3180 -0.08376 2021 9 16 59473 0.2357 0.3164 -0.08280 2021 9 17 59474 0.2350 0.3148 -0.08193 2021 9 18 59475 0.2343 0.3133 -0.08123 2021 9 19 59476 0.2336 0.3117 -0.08075 2021 9 20 59477 0.2328 0.3102 -0.08046 2021 9 21 59478 0.2320 0.3086 -0.08031 2021 9 22 59479 0.2312 0.3071 -0.08021 2021 9 23 59480 0.2303 0.3056 -0.08007 2021 9 24 59481 0.2294 0.3041 -0.07985 2021 9 25 59482 0.2285 0.3026 -0.07949 2021 9 26 59483 0.2276 0.3012 -0.07899 2021 9 27 59484 0.2266 0.2997 -0.07837 2021 9 28 59485 0.2256 0.2983 -0.07766 2021 9 29 59486 0.2246 0.2968 -0.07692 2021 9 30 59487 0.2235 0.2954 -0.07622 2021 10 1 59488 0.2224 0.2940 -0.07562 2021 10 2 59489 0.2213 0.2926 -0.07517 2021 10 3 59490 0.2202 0.2913 -0.07493 2021 10 4 59491 0.2190 0.2899 -0.07496 2021 10 5 59492 0.2179 0.2886 -0.07528 2021 10 6 59493 0.2166 0.2872 -0.07584 2021 10 7 59494 0.2154 0.2859 -0.07654 2021 10 8 59495 0.2141 0.2846 -0.07726 2021 10 9 59496 0.2128 0.2834 -0.07787 2021 10 10 59497 0.2115 0.2821 -0.07826 2021 10 11 59498 0.2102 0.2809 -0.07845 2021 10 12 59499 0.2088 0.2797 -0.07850 2021 10 13 59500 0.2074 0.2785 -0.07854 2021 10 14 59501 0.2060 0.2773 -0.07868 2021 10 15 59502 0.2046 0.2762 -0.07893 2021 10 16 59503 0.2032 0.2750 -0.07935 2021 10 17 59504 0.2017 0.2739 -0.07993 2021 10 18 59505 0.2002 0.2728 -0.08061 2021 10 19 59506 0.1987 0.2718 -0.08139 2021 10 20 59507 0.1971 0.2707 -0.08213 2021 10 21 59508 0.1956 0.2697 -0.08273 2021 10 22 59509 0.1940 0.2687 -0.08317 2021 10 23 59510 0.1924 0.2677 -0.08336 2021 10 24 59511 0.1908 0.2667 -0.08330 2021 10 25 59512 0.1891 0.2658 -0.08303 2021 10 26 59513 0.1875 0.2649 -0.08259 2021 10 27 59514 0.1858 0.2640 -0.08211 2021 10 28 59515 0.1841 0.2632 -0.08170 2021 10 29 59516 0.1824 0.2623 -0.08139 2021 10 30 59517 0.1807 0.2615 -0.08127 2021 10 31 59518 0.1789 0.2607 -0.08140 2021 11 1 59519 0.1772 0.2600 -0.08179 2021 11 2 59520 0.1754 0.2592 -0.08238 2021 11 3 59521 0.1736 0.2585 -0.08310 2021 11 4 59522 0.1718 0.2578 -0.08387 2021 11 5 59523 0.1700 0.2572 -0.08451 2021 11 6 59524 0.1682 0.2566 -0.08486 2021 11 7 59525 0.1663 0.2560 -0.08489 2021 11 8 59526 0.1645 0.2554 -0.08463 2021 11 9 59527 0.1626 0.2548 -0.08424 2021 11 10 59528 0.1607 0.2543 -0.08384 2021 11 11 59529 0.1589 0.2538 -0.08357 2021 11 12 59530 0.1570 0.2534 -0.08355 2021 11 13 59531 0.1551 0.2529 -0.08369 2021 11 14 59532 0.1531 0.2525 -0.08398 2021 11 15 59533 0.1512 0.2521 -0.08438 2021 11 16 59534 0.1493 0.2518 -0.08479 2021 11 17 59535 0.1474 0.2515 -0.08511 2021 11 18 59536 0.1454 0.2512 -0.08530 2021 11 19 59537 0.1435 0.2509 -0.08538 2021 11 20 59538 0.1415 0.2507 -0.08530 2021 11 21 59539 0.1396 0.2505 -0.08505 2021 11 22 59540 0.1376 0.2503 -0.08469 2021 11 23 59541 0.1356 0.2501 -0.08431 2021 11 24 59542 0.1336 0.2500 -0.08393 2021 11 25 59543 0.1317 0.2499 -0.08358 2021 11 26 59544 0.1297 0.2499 -0.08335 2021 11 27 59545 0.1277 0.2498 -0.08328 2021 11 28 59546 0.1257 0.2498 -0.08340 2021 11 29 59547 0.1237 0.2499 -0.08375 2021 11 30 59548 0.1218 0.2499 -0.08430 2021 12 1 59549 0.1198 0.2500 -0.08495 2021 12 2 59550 0.1178 0.2501 -0.08558 2021 12 3 59551 0.1158 0.2503 -0.08604 2021 12 4 59552 0.1138 0.2505 -0.08635 2021 12 5 59553 0.1119 0.2507 -0.08637 2021 12 6 59554 0.1099 0.2509 -0.08621 2021 12 7 59555 0.1079 0.2512 -0.08602 2021 12 8 59556 0.1060 0.2515 -0.08583 2021 12 9 59557 0.1040 0.2518 -0.08571 2021 12 10 59558 0.1021 0.2521 -0.08573 2021 12 11 59559 0.1001 0.2525 -0.08595 2021 12 12 59560 0.0982 0.2529 -0.08639 2021 12 13 59561 0.0962 0.2534 -0.08686 2021 12 14 59562 0.0943 0.2539 -0.08738 2021 12 15 59563 0.0924 0.2544 -0.08781 2021 12 16 59564 0.0905 0.2549 -0.08810 2021 12 17 59565 0.0886 0.2554 -0.08821 2021 12 18 59566 0.0867 0.2560 -0.08812 2021 12 19 59567 0.0848 0.2566 -0.08791 2021 12 20 59568 0.0830 0.2573 -0.08765 2021 12 21 59569 0.0811 0.2580 -0.08738 2021 12 22 59570 0.0793 0.2587 -0.08716 2021 12 23 59571 0.0774 0.2594 -0.08703 2021 12 24 59572 0.0756 0.2602 -0.08708 2021 12 25 59573 0.0738 0.2609 -0.08738 2021 12 26 59574 0.0720 0.2618 -0.08791 2021 12 27 59575 0.0702 0.2626 -0.08868 2021 12 28 59576 0.0685 0.2635 -0.08955 2021 12 29 59577 0.0667 0.2644 -0.09040 2021 12 30 59578 0.0650 0.2653 -0.09117 2021 12 31 59579 0.0633 0.2662 -0.09176 2022 1 1 59580 0.0616 0.2672 -0.09213 2022 1 2 59581 0.0599 0.2682 -0.09232 2022 1 3 59582 0.0582 0.2692 -0.09239 2022 1 4 59583 0.0566 0.2703 -0.09254 2022 1 5 59584 0.0550 0.2713 -0.09276 2022 1 6 59585 0.0534 0.2724 -0.09313 2022 1 7 59586 0.0518 0.2736 -0.09366 2022 1 8 59587 0.0502 0.2747 -0.09429 2022 1 9 59588 0.0487 0.2759 -0.09501 2022 1 10 59589 0.0472 0.2771 -0.09569 2022 1 11 59590 0.0457 0.2783 -0.09624 2022 1 12 59591 0.0442 0.2795 -0.09663 2022 1 13 59592 0.0427 0.2808 -0.09687 2022 1 14 59593 0.0413 0.2821 -0.09683 2022 1 15 59594 0.0399 0.2834 -0.09662 2022 1 16 59595 0.0385 0.2847 -0.09630 2022 1 17 59596 0.0372 0.2861 -0.09588 2022 1 18 59597 0.0358 0.2875 -0.09549 2022 1 19 59598 0.0345 0.2889 -0.09524 2022 1 20 59599 0.0332 0.2903 -0.09517 2022 1 21 59600 0.0320 0.2917 -0.09527 2022 1 22 59601 0.0308 0.2932 -0.09556 2022 1 23 59602 0.0296 0.2947 -0.09602 2022 1 24 59603 0.0284 0.2961 -0.09660 2022 1 25 59604 0.0272 0.2977 -0.09719 2022 1 26 59605 0.0261 0.2992 -0.09762 2022 1 27 59606 0.0250 0.3007 -0.09785 2022 1 28 59607 0.0240 0.3023 -0.09784 2022 1 29 59608 0.0229 0.3039 -0.09762 2022 1 30 59609 0.0219 0.3055 -0.09727 2022 1 31 59610 0.0209 0.3071 -0.09690 2022 2 1 59611 0.0200 0.3087 -0.09667 2022 2 2 59612 0.0191 0.3104 -0.09672 2022 2 3 59613 0.0182 0.3120 -0.09702 2022 2 4 59614 0.0173 0.3137 -0.09749 2022 2 5 59615 0.0165 0.3154 -0.09801 2022 2 6 59616 0.0157 0.3171 -0.09852 2022 2 7 59617 0.0149 0.3188 -0.09903 2022 2 8 59618 0.0142 0.3205 -0.09949 2022 2 9 59619 0.0135 0.3223 -0.09987 2022 2 10 59620 0.0128 0.3240 -0.10010 2022 2 11 59621 0.0122 0.3258 -0.10021 2022 2 12 59622 0.0116 0.3275 -0.10023 2022 2 13 59623 0.0110 0.3293 -0.10018 2022 2 14 59624 0.0105 0.3311 -0.10013 2022 2 15 59625 0.0100 0.3329 -0.10014 2022 2 16 59626 0.0095 0.3347 -0.10029 2022 2 17 59627 0.0091 0.3365 -0.10061 2022 2 18 59628 0.0087 0.3384 -0.10112 2022 2 19 59629 0.0083 0.3402 -0.10178 2022 2 20 59630 0.0080 0.3420 -0.10256 2022 2 21 59631 0.0077 0.3439 -0.10331 2022 2 22 59632 0.0074 0.3457 -0.10394 2022 2 23 59633 0.0072 0.3476 -0.10435 2022 2 24 59634 0.0070 0.3494 -0.10457 2022 2 25 59635 0.0068 0.3513 -0.10454 2022 2 26 59636 0.0067 0.3532 -0.10435 2022 2 27 59637 0.0066 0.3550 -0.10413 2022 2 28 59638 0.0065 0.3569 -0.10403 2022 3 1 59639 0.0065 0.3588 -0.10416 2022 3 2 59640 0.0065 0.3606 -0.10450 2022 3 3 59641 0.0065 0.3625 -0.10511 2022 3 4 59642 0.0066 0.3644 -0.10594 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) 59255 -108.61 0.56 -6.28 0.14 59256 -108.41 0.56 -6.48 0.14 59257 -108.33 0.56 -6.67 0.14 59258 -108.30 0.61 -6.76 0.08 59259 -108.29 0.61 -6.73 0.08 59260 -108.36 0.60 -6.65 0.19 59261 -108.50 0.59 -6.59 0.24 59262 -108.62 0.61 -6.57 0.23 59263 -108.60 0.61 -6.54 0.23 59264 -108.45 0.61 -6.47 0.23 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59255 0.187 0.222 0.029 0.142 59256 0.205 0.222 0.005 0.142 59257 0.219 0.222 -0.011 0.142 59258 0.228 0.242 -0.005 0.080 59259 0.233 0.242 0.021 0.080 59260 0.237 0.237 0.062 0.186 59261 0.245 0.235 0.110 0.238 59262 0.258 0.243 0.159 0.232 59263 0.280 0.243 0.203 0.232 59264 0.309 0.243 0.242 0.232 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).