********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 15 October 2026 Vol. XXXIX No. 042 ______________________________________________________________________ GENERAL INFORMATION: 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 = 0.0 seconds beginning 09 April 2026 at 0000 UTC = -0.1 seconds beginning 29 October 2026 at 0000 UTC Beginning 1 January 2017: TAI-UTC = 37.000 000 seconds *********************************************************************** * ANNOUNCEMENTS: * * * * ------------------------------------------------------------------- * * Starting with the weekly Bulletin A products published on 15 * * October 2026, the daily and weekly products from the IERS Rapid * * Service/Prediction Centre will be computed using a new algorithm * * along with improved pre-processing of Atmospheric Angular Momentum * * inputs. The new algorithm is a Kalman smoother and weighted cubic * * spline. Going forward, users should expect to see improvements in * * the 0-7 day predictions of UT1-UTC from the current day of * * computation, with polar motion and celestial pole offset values * * remaining mostly unchanged. After implementation, slight changes * * may result if comparing to previous daily and weekly published * * values up to one year in the past of the date of this change. It * * is expected that these values are less than 0.05 mas in polar * * motion and 20 us in UT1-UTC. * * ------------------------------------------------------------------- * * * * There will NOT be a leap second introduced in UTC * * at the end of December 2026. * * * * The primary source for IERS Rapid Service/Prediction Center (RS/PC) * * data products is the official IERS RS/PC website: * * https://maia.usno.navy.mil * * * * IERS RS/PC products are also available from: * * NASA CDDIS: https://cddis.nasa.gov/archive/products/iers/ * * NASA CDDIS: ftps://gdc.cddis.eosdis.nasa.gov/products/iers/ * * IERS Central Bureau: https://datacenter.iers.org/eop.php * * * * Questions about IERS RS/PC products can be emailed to: * * eopcp@us.navy.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 26 10 9 61322 0.16725 .00004 0.32272 .00004 -0.030145 0.000010 26 10 10 61323 0.16629 .00004 0.32316 .00004 -0.031608 0.000011 26 10 11 61324 0.16521 .00004 0.32353 .00004 -0.032999 0.000011 26 10 12 61325 0.16376 .00004 0.32355 .00004 -0.034262 0.000013 26 10 13 61326 0.16204 .00004 0.32295 .00004 -0.035307 0.000012 26 10 14 61327 0.16030 .00004 0.32215 .00004 -0.036101 0.000011 26 10 15 61328 0.15856 .00004 0.32154 .00004 -0.036719 0.000016 _______________________________________________________________________ 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 = 0.1604 + 0.0306 cos A - 0.1107 sin A - 0.0351 cos C + 0.0405 sin C y = 0.3748 - 0.0938 cos A - 0.0292 sin A + 0.0405 cos C + 0.0351 sin C UT1-UTC = -0.1061 - 0.00037 (MJD - 61335) - (UT2-UT1) where A = 2*pi*(MJD-61328)/365.25 and C = 2*pi*(MJD-61328)/435. TAI-UTC(MJD 61329) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-61328)**0.80 S t = 0.00025 (MJD-61328)**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) 2026 10 16 61329 0.1571 0.3210 -0.03722 2026 10 17 61330 0.1556 0.3207 -0.03769 2026 10 18 61331 0.1543 0.3205 -0.03825 2026 10 19 61332 0.1531 0.3204 -0.03897 2026 10 20 61333 0.1519 0.3204 -0.03989 2026 10 21 61334 0.1508 0.3204 -0.04106 2026 10 22 61335 0.1496 0.3204 -0.04248 2026 10 23 61336 0.1483 0.3205 -0.04409 2026 10 24 61337 0.1471 0.3205 -0.04580 2026 10 25 61338 0.1459 0.3205 -0.04749 2026 10 26 61339 0.1446 0.3205 -0.04906 2026 10 27 61340 0.1434 0.3205 -0.05042 2026 10 28 61341 0.1421 0.3206 -0.05153 2026 10 29 61342 0.1409 0.3207 -0.05240 2026 10 30 61343 0.1397 0.3208 -0.05314 2026 10 31 61344 0.1385 0.3210 -0.05389 2026 11 1 61345 0.1373 0.3212 -0.05480 2026 11 2 61346 0.1362 0.3214 -0.05592 2026 11 3 61347 0.1350 0.3216 -0.05729 2026 11 4 61348 0.1338 0.3218 -0.05885 2026 11 5 61349 0.1327 0.3221 -0.06053 2026 11 6 61350 0.1315 0.3224 -0.06223 2026 11 7 61351 0.1303 0.3227 -0.06385 2026 11 8 61352 0.1292 0.3230 -0.06533 2026 11 9 61353 0.1280 0.3233 -0.06661 2026 11 10 61354 0.1269 0.3237 -0.06768 2026 11 11 61355 0.1258 0.3240 -0.06857 2026 11 12 61356 0.1246 0.3244 -0.06932 2026 11 13 61357 0.1235 0.3248 -0.07001 2026 11 14 61358 0.1224 0.3252 -0.07072 2026 11 15 61359 0.1213 0.3257 -0.07150 2026 11 16 61360 0.1201 0.3261 -0.07243 2026 11 17 61361 0.1190 0.3266 -0.07354 2026 11 18 61362 0.1179 0.3271 -0.07485 2026 11 19 61363 0.1169 0.3276 -0.07635 2026 11 20 61364 0.1158 0.3281 -0.07799 2026 11 21 61365 0.1147 0.3287 -0.07971 2026 11 22 61366 0.1136 0.3292 -0.08138 2026 11 23 61367 0.1126 0.3298 -0.08288 2026 11 24 61368 0.1115 0.3304 -0.08415 2026 11 25 61369 0.1104 0.3310 -0.08518 2026 11 26 61370 0.1094 0.3316 -0.08604 2026 11 27 61371 0.1084 0.3322 -0.08686 2026 11 28 61372 0.1073 0.3329 -0.08777 2026 11 29 61373 0.1063 0.3335 -0.08888 2026 11 30 61374 0.1053 0.3342 -0.09022 2026 12 1 61375 0.1043 0.3349 -0.09175 2026 12 2 61376 0.1033 0.3356 -0.09336 2026 12 3 61377 0.1024 0.3364 -0.09497 2026 12 4 61378 0.1014 0.3371 -0.09645 2026 12 5 61379 0.1004 0.3379 -0.09776 2026 12 6 61380 0.0995 0.3386 -0.09885 2026 12 7 61381 0.0986 0.3394 -0.09973 2026 12 8 61382 0.0976 0.3402 -0.10040 2026 12 9 61383 0.0967 0.3410 -0.10094 2026 12 10 61384 0.0958 0.3418 -0.10140 2026 12 11 61385 0.0949 0.3427 -0.10186 2026 12 12 61386 0.0940 0.3435 -0.10240 2026 12 13 61387 0.0932 0.3444 -0.10308 2026 12 14 61388 0.0923 0.3453 -0.10392 2026 12 15 61389 0.0915 0.3462 -0.10496 2026 12 16 61390 0.0907 0.3471 -0.10618 2026 12 17 61391 0.0899 0.3480 -0.10755 2026 12 18 61392 0.0891 0.3489 -0.10899 2026 12 19 61393 0.0883 0.3499 -0.11041 2026 12 20 61394 0.0875 0.3508 -0.11172 2026 12 21 61395 0.0868 0.3518 -0.11282 2026 12 22 61396 0.0860 0.3528 -0.11367 2026 12 23 61397 0.0853 0.3538 -0.11431 2026 12 24 61398 0.0846 0.3548 -0.11486 2026 12 25 61399 0.0839 0.3558 -0.11546 2026 12 26 61400 0.0832 0.3568 -0.11626 2026 12 27 61401 0.0826 0.3579 -0.11731 2026 12 28 61402 0.0819 0.3589 -0.11860 2026 12 29 61403 0.0813 0.3600 -0.12002 2026 12 30 61404 0.0807 0.3610 -0.12146 2026 12 31 61405 0.0801 0.3621 -0.12280 2027 1 1 61406 0.0796 0.3632 -0.12395 2027 1 2 61407 0.0790 0.3643 -0.12489 2027 1 3 61408 0.0785 0.3654 -0.12560 2027 1 4 61409 0.0780 0.3665 -0.12613 2027 1 5 61410 0.0775 0.3676 -0.12650 2027 1 6 61411 0.0770 0.3687 -0.12678 2027 1 7 61412 0.0765 0.3699 -0.12705 2027 1 8 61413 0.0761 0.3710 -0.12738 2027 1 9 61414 0.0757 0.3722 -0.12782 2027 1 10 61415 0.0753 0.3733 -0.12842 2027 1 11 61416 0.0749 0.3745 -0.12920 2027 1 12 61417 0.0745 0.3757 -0.13015 2027 1 13 61418 0.0742 0.3768 -0.13123 2027 1 14 61419 0.0739 0.3780 -0.13238 2027 1 15 61420 0.0736 0.3792 -0.13354 2027 1 16 61421 0.0733 0.3804 -0.13461 2027 1 17 61422 0.0730 0.3816 -0.13551 2027 1 18 61423 0.0728 0.3828 -0.13620 2027 1 19 61424 0.0726 0.3840 -0.13669 2027 1 20 61425 0.0724 0.3852 -0.13705 2027 1 21 61426 0.0722 0.3864 -0.13741 2027 1 22 61427 0.0721 0.3877 -0.13794 2027 1 23 61428 0.0719 0.3889 -0.13872 2027 1 24 61429 0.0718 0.3901 -0.13979 2027 1 25 61430 0.0717 0.3913 -0.14106 2027 1 26 61431 0.0717 0.3926 -0.14242 2027 1 27 61432 0.0716 0.3938 -0.14370 2027 1 28 61433 0.0716 0.3950 -0.14481 2027 1 29 61434 0.0716 0.3963 -0.14568 2027 1 30 61435 0.0717 0.3975 -0.14630 2027 1 31 61436 0.0717 0.3987 -0.14684 2027 2 1 61437 0.0718 0.4000 -0.14721 2027 2 2 61438 0.0719 0.4012 -0.14748 2027 2 3 61439 0.0720 0.4025 -0.14772 2027 2 4 61440 0.0721 0.4037 -0.14801 2027 2 5 61441 0.0723 0.4049 -0.14841 2027 2 6 61442 0.0725 0.4062 -0.14899 2027 2 7 61443 0.0727 0.4074 -0.14975 2027 2 8 61444 0.0729 0.4086 -0.15072 2027 2 9 61445 0.0732 0.4098 -0.15184 2027 2 10 61446 0.0735 0.4111 -0.15306 2027 2 11 61447 0.0738 0.4123 -0.15430 2027 2 12 61448 0.0741 0.4135 -0.15547 2027 2 13 61449 0.0744 0.4147 -0.15650 2027 2 14 61450 0.0748 0.4159 -0.15734 2027 2 15 61451 0.0752 0.4171 -0.15798 2027 2 16 61452 0.0756 0.4183 -0.15849 2027 2 17 61453 0.0761 0.4195 -0.15898 2027 2 18 61454 0.0765 0.4207 -0.15958 2027 2 19 61455 0.0770 0.4219 -0.16041 2027 2 20 61456 0.0775 0.4231 -0.16155 2027 2 21 61457 0.0781 0.4243 -0.16297 2027 2 22 61458 0.0786 0.4254 -0.16457 2027 2 23 61459 0.0792 0.4266 -0.16619 2027 2 24 61460 0.0798 0.4278 -0.16769 2027 2 25 61461 0.0804 0.4289 -0.16898 2027 2 26 61462 0.0810 0.4300 -0.17001 2027 2 27 61463 0.0817 0.4312 -0.17080 2027 2 28 61464 0.0824 0.4323 -0.17140 2027 3 1 61465 0.0831 0.4334 -0.17187 2027 3 2 61466 0.0838 0.4345 -0.17229 2027 3 3 61467 0.0846 0.4356 -0.17273 2027 3 4 61468 0.0854 0.4367 -0.17326 2027 3 5 61469 0.0862 0.4377 -0.17394 2027 3 6 61470 0.0870 0.4388 -0.17481 2027 3 7 61471 0.0878 0.4398 -0.17588 2027 3 8 61472 0.0887 0.4409 -0.17713 2027 3 9 61473 0.0896 0.4419 -0.17850 2027 3 10 61474 0.0905 0.4429 -0.17990 2027 3 11 61475 0.0914 0.4439 -0.18126 2027 3 12 61476 0.0923 0.4449 -0.18248 2027 3 13 61477 0.0933 0.4459 -0.18350 2027 3 14 61478 0.0943 0.4468 -0.18431 2027 3 15 61479 0.0953 0.4478 -0.18496 2027 3 16 61480 0.0963 0.4487 -0.18554 2027 3 17 61481 0.0974 0.4496 -0.18618 2027 3 18 61482 0.0984 0.4505 -0.18700 2027 3 19 61483 0.0995 0.4514 -0.18808 2027 3 20 61484 0.1006 0.4523 -0.18945 2027 3 21 61485 0.1017 0.4532 -0.19103 2027 3 22 61486 0.1028 0.4540 -0.19272 2027 3 23 61487 0.1040 0.4548 -0.19435 2027 3 24 61488 0.1052 0.4557 -0.19582 2027 3 25 61489 0.1064 0.4565 -0.19704 2027 3 26 61490 0.1076 0.4572 -0.19800 2027 3 27 61491 0.1088 0.4580 -0.19874 2027 3 28 61492 0.1100 0.4587 -0.19931 2027 3 29 61493 0.1113 0.4595 -0.19980 2027 3 30 61494 0.1125 0.4602 -0.20028 2027 3 31 61495 0.1138 0.4609 -0.20082 2027 4 1 61496 0.1151 0.4615 -0.20149 2027 4 2 61497 0.1165 0.4622 -0.20233 2027 4 3 61498 0.1178 0.4628 -0.20337 2027 4 4 61499 0.1191 0.4634 -0.20460 2027 4 5 61500 0.1205 0.4640 -0.20598 2027 4 6 61501 0.1219 0.4646 -0.20744 2027 4 7 61502 0.1233 0.4652 -0.20890 2027 4 8 61503 0.1247 0.4657 -0.21025 2027 4 9 61504 0.1261 0.4662 -0.21143 2027 4 10 61505 0.1275 0.4667 -0.21240 2027 4 11 61506 0.1289 0.4672 -0.21322 2027 4 12 61507 0.1304 0.4677 -0.21396 2027 4 13 61508 0.1318 0.4681 -0.21476 2027 4 14 61509 0.1333 0.4685 -0.21574 2027 4 15 61510 0.1348 0.4689 -0.21700 2027 4 16 61511 0.1363 0.4693 -0.21859 2027 4 17 61512 0.1378 0.4696 -0.22047 2027 4 18 61513 0.1393 0.4700 -0.22255 2027 4 19 61514 0.1408 0.4703 -0.22472 2027 4 20 61515 0.1424 0.4706 -0.22683 2027 4 21 61516 0.1439 0.4708 -0.22876 2027 4 22 61517 0.1454 0.4711 -0.23044 2027 4 23 61518 0.1470 0.4713 -0.23184 2027 4 24 61519 0.1486 0.4715 -0.23295 2027 4 25 61520 0.1501 0.4717 -0.23381 2027 4 26 61521 0.1517 0.4718 -0.23448 2027 4 27 61522 0.1533 0.4719 -0.23505 2027 4 28 61523 0.1549 0.4721 -0.23557 2027 4 29 61524 0.1565 0.4721 -0.23613 2027 4 30 61525 0.1580 0.4722 -0.23677 2027 5 1 61526 0.1596 0.4722 -0.23750 2027 5 2 61527 0.1612 0.4722 -0.23834 2027 5 3 61528 0.1629 0.4722 -0.23924 2027 5 4 61529 0.1645 0.4722 -0.24012 2027 5 5 61530 0.1661 0.4721 -0.24089 2027 5 6 61531 0.1677 0.4721 -0.24148 2027 5 7 61532 0.1693 0.4720 -0.24183 2027 5 8 61533 0.1709 0.4718 -0.24194 2027 5 9 61534 0.1725 0.4717 -0.24188 2027 5 10 61535 0.1742 0.4715 -0.24177 2027 5 11 61536 0.1758 0.4713 -0.24174 2027 5 12 61537 0.1774 0.4711 -0.24186 2027 5 13 61538 0.1790 0.4708 -0.24220 2027 5 14 61539 0.1806 0.4706 -0.24271 2027 5 15 61540 0.1822 0.4703 -0.24334 2027 5 16 61541 0.1838 0.4699 -0.24398 2027 5 17 61542 0.1854 0.4696 -0.24453 2027 5 18 61543 0.1870 0.4692 -0.24490 2027 5 19 61544 0.1886 0.4688 -0.24502 2027 5 20 61545 0.1902 0.4684 -0.24487 2027 5 21 61546 0.1918 0.4680 -0.24446 2027 5 22 61547 0.1934 0.4675 -0.24387 2027 5 23 61548 0.1950 0.4670 -0.24319 2027 5 24 61549 0.1966 0.4665 -0.24252 2027 5 25 61550 0.1981 0.4660 -0.24195 2027 5 26 61551 0.1997 0.4655 -0.24151 2027 5 27 61552 0.2013 0.4649 -0.24126 2027 5 28 61553 0.2028 0.4643 -0.24119 2027 5 29 61554 0.2043 0.4637 -0.24128 2027 5 30 61555 0.2059 0.4630 -0.24152 2027 5 31 61556 0.2074 0.4623 -0.24187 2027 6 1 61557 0.2089 0.4616 -0.24219 2027 6 2 61558 0.2104 0.4609 -0.24232 2027 6 3 61559 0.2119 0.4602 -0.24220 2027 6 4 61560 0.2134 0.4594 -0.24190 2027 6 5 61561 0.2148 0.4587 -0.24140 2027 6 6 61562 0.2163 0.4579 -0.24075 2027 6 7 61563 0.2177 0.4570 -0.24004 2027 6 8 61564 0.2192 0.4562 -0.23949 2027 6 9 61565 0.2206 0.4553 -0.23920 2027 6 10 61566 0.2220 0.4544 -0.23912 2027 6 11 61567 0.2234 0.4535 -0.23916 2027 6 12 61568 0.2248 0.4526 -0.23914 2027 6 13 61569 0.2261 0.4517 -0.23898 2027 6 14 61570 0.2275 0.4507 -0.23860 2027 6 15 61571 0.2288 0.4497 -0.23797 2027 6 16 61572 0.2301 0.4487 -0.23711 2027 6 17 61573 0.2314 0.4476 -0.23602 2027 6 18 61574 0.2327 0.4466 -0.23482 2027 6 19 61575 0.2340 0.4455 -0.23362 2027 6 20 61576 0.2352 0.4444 -0.23245 2027 6 21 61577 0.2365 0.4433 -0.23128 2027 6 22 61578 0.2377 0.4422 -0.23016 2027 6 23 61579 0.2389 0.4411 -0.22919 2027 6 24 61580 0.2401 0.4399 -0.22835 2027 6 25 61581 0.2412 0.4387 -0.22768 2027 6 26 61582 0.2423 0.4375 -0.22709 2027 6 27 61583 0.2435 0.4363 -0.22649 2027 6 28 61584 0.2446 0.4351 -0.22587 2027 6 29 61585 0.2456 0.4338 -0.22518 2027 6 30 61586 0.2467 0.4326 -0.22437 2027 7 1 61587 0.2477 0.4313 -0.22337 2027 7 2 61588 0.2487 0.4300 -0.22221 2027 7 3 61589 0.2497 0.4287 -0.22098 2027 7 4 61590 0.2507 0.4274 -0.21980 2027 7 5 61591 0.2516 0.4260 -0.21879 2027 7 6 61592 0.2526 0.4247 -0.21810 2027 7 7 61593 0.2535 0.4233 -0.21770 2027 7 8 61594 0.2543 0.4219 -0.21751 2027 7 9 61595 0.2552 0.4205 -0.21744 2027 7 10 61596 0.2560 0.4191 -0.21733 2027 7 11 61597 0.2568 0.4177 -0.21705 2027 7 12 61598 0.2576 0.4163 -0.21655 2027 7 13 61599 0.2584 0.4148 -0.21580 2027 7 14 61600 0.2591 0.4134 -0.21489 2027 7 15 61601 0.2598 0.4119 -0.21378 2027 7 16 61602 0.2605 0.4104 -0.21263 2027 7 17 61603 0.2611 0.4089 -0.21142 2027 7 18 61604 0.2617 0.4074 -0.21025 2027 7 19 61605 0.2623 0.4059 -0.20918 2027 7 20 61606 0.2629 0.4044 -0.20829 2027 7 21 61607 0.2635 0.4029 -0.20762 2027 7 22 61608 0.2640 0.4013 -0.20706 2027 7 23 61609 0.2645 0.3998 -0.20657 2027 7 24 61610 0.2649 0.3982 -0.20610 2027 7 25 61611 0.2654 0.3967 -0.20560 2027 7 26 61612 0.2658 0.3951 -0.20500 2027 7 27 61613 0.2662 0.3935 -0.20423 2027 7 28 61614 0.2665 0.3920 -0.20332 2027 7 29 61615 0.2668 0.3904 -0.20226 2027 7 30 61616 0.2671 0.3888 -0.20109 2027 7 31 61617 0.2674 0.3872 -0.19996 2027 8 1 61618 0.2676 0.3856 -0.19893 2027 8 2 61619 0.2678 0.3840 -0.19817 2027 8 3 61620 0.2680 0.3824 -0.19777 2027 8 4 61621 0.2682 0.3808 -0.19768 2027 8 5 61622 0.2683 0.3792 -0.19778 2027 8 6 61623 0.2684 0.3776 -0.19792 2027 8 7 61624 0.2684 0.3760 -0.19797 2027 8 8 61625 0.2685 0.3743 -0.19776 2027 8 9 61626 0.2685 0.3727 -0.19731 2027 8 10 61627 0.2685 0.3711 -0.19658 2027 8 11 61628 0.2684 0.3695 -0.19569 2027 8 12 61629 0.2683 0.3679 -0.19471 2027 8 13 61630 0.2682 0.3663 -0.19368 2027 8 14 61631 0.2681 0.3647 -0.19265 2027 8 15 61632 0.2679 0.3630 -0.19166 2027 8 16 61633 0.2677 0.3614 -0.19083 2027 8 17 61634 0.2675 0.3598 -0.19022 2027 8 18 61635 0.2672 0.3582 -0.18982 2027 8 19 61636 0.2669 0.3566 -0.18956 2027 8 20 61637 0.2666 0.3550 -0.18936 2027 8 21 61638 0.2662 0.3534 -0.18915 2027 8 22 61639 0.2658 0.3519 -0.18887 2027 8 23 61640 0.2654 0.3503 -0.18843 2027 8 24 61641 0.2650 0.3487 -0.18783 2027 8 25 61642 0.2645 0.3471 -0.18710 2027 8 26 61643 0.2640 0.3456 -0.18621 2027 8 27 61644 0.2635 0.3440 -0.18534 2027 8 28 61645 0.2629 0.3425 -0.18455 2027 8 29 61646 0.2624 0.3409 -0.18396 2027 8 30 61647 0.2617 0.3394 -0.18368 2027 8 31 61648 0.2611 0.3379 -0.18371 2027 9 1 61649 0.2604 0.3364 -0.18396 2027 9 2 61650 0.2597 0.3349 -0.18435 2027 9 3 61651 0.2590 0.3334 -0.18477 2027 9 4 61652 0.2582 0.3319 -0.18506 2027 9 5 61653 0.2574 0.3304 -0.18508 2027 9 6 61654 0.2566 0.3290 -0.18479 2027 9 7 61655 0.2558 0.3275 -0.18430 2027 9 8 61656 0.2549 0.3261 -0.18372 2027 9 9 61657 0.2540 0.3247 -0.18315 2027 9 10 61658 0.2531 0.3233 -0.18267 2027 9 11 61659 0.2521 0.3219 -0.18226 2027 9 12 61660 0.2512 0.3205 -0.18205 2027 9 13 61661 0.2502 0.3191 -0.18204 2027 9 14 61662 0.2491 0.3178 -0.18225 2027 9 15 61663 0.2481 0.3164 -0.18266 2027 9 16 61664 0.2470 0.3151 -0.18316 2027 9 17 61665 0.2459 0.3138 -0.18368 2027 9 18 61666 0.2447 0.3125 -0.18411 2027 9 19 61667 0.2436 0.3113 -0.18438 2027 9 20 61668 0.2424 0.3100 -0.18447 2027 9 21 61669 0.2412 0.3088 -0.18439 2027 9 22 61670 0.2400 0.3076 -0.18416 2027 9 23 61671 0.2387 0.3064 -0.18383 2027 9 24 61672 0.2374 0.3052 -0.18351 2027 9 25 61673 0.2361 0.3040 -0.18330 2027 9 26 61674 0.2348 0.3029 -0.18337 2027 9 27 61675 0.2334 0.3017 -0.18378 2027 9 28 61676 0.2321 0.3006 -0.18454 2027 9 29 61677 0.2307 0.2996 -0.18550 2027 9 30 61678 0.2293 0.2985 -0.18641 2027 10 1 61679 0.2278 0.2975 -0.18719 2027 10 2 61680 0.2264 0.2965 -0.18781 2027 10 3 61681 0.2249 0.2955 -0.18812 2027 10 4 61682 0.2234 0.2945 -0.18815 2027 10 5 61683 0.2219 0.2935 -0.18800 2027 10 6 61684 0.2203 0.2926 -0.18777 2027 10 7 61685 0.2188 0.2917 -0.18750 2027 10 8 61686 0.2172 0.2908 -0.18730 2027 10 9 61687 0.2156 0.2900 -0.18725 2027 10 10 61688 0.2140 0.2891 -0.18734 2027 10 11 61689 0.2124 0.2883 -0.18759 2027 10 12 61690 0.2107 0.2875 -0.18807 2027 10 13 61691 0.2091 0.2868 -0.18873 2027 10 14 61692 0.2074 0.2860 -0.18942 2027 10 15 61693 0.2057 0.2853 -0.19011 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) 61306 -123.36 0.12 -11.21 0.05 61307 -123.55 0.13 -11.09 0.05 61308 -123.66 0.13 -10.97 0.05 61309 -123.68 0.13 -10.89 0.05 61310 -123.69 0.14 -10.84 0.06 61311 -123.77 0.15 -10.81 0.06 61312 -123.90 0.17 -10.81 0.07 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 61306 0.367 0.050 -0.106 0.046 61307 0.367 0.050 -0.098 0.048 61308 0.367 0.051 -0.090 0.050 61309 0.366 0.053 -0.081 0.053 61310 0.365 0.056 -0.073 0.057 61311 0.364 0.060 -0.065 0.062 61312 0.363 0.067 -0.056 0.068