UT1 table
UT1 table
This file records the Earth’s actual rotation in the form of corrections TAI-UT1 in a format readable by TEMPO.
This file is generated from Astropy’s parsing of the IERS bulletins. It should be updated approximately monthly, and it includes the IERS predictions covering about a year after the publication date.
This differs slightly from the version traditionally distributed with TEMPO - that is generated by a combination of a perl script parsing the output from the IERS web form and a custom C program generating predictions. As a result, this generated file may not extend as far into the future as the conventional ut1.dat does. There are also minor differences in some of the early values; the origin of these early values is not completely clear, and some of them predate the earliest values in the IERS bulletins Astropy uses.
If there are any questions, contact Anne Archibald anne.archibald@nanograv.org.
| File | tempo/clock/ut1.dat |
| Authority | observatory |
| File start | 1973-01-02 MJD 41684.0 |
| File end | 2026-02-07 MJD 61078.0 |
| Update interval (days) | 0 |
| Last update attempt | 2025-02-05 |
| Last update result | Unchanged |
Log entries from the last few update attempts:
2025-01-27 20:35:21.568 - Unchanged
2025-01-28 20:35:21.643 - Unchanged
2025-01-29 20:36:07.499 - Unchanged
2025-01-30 20:35:37.070 - Updated
2025-01-31 20:34:45.384 - Unchanged
2025-02-01 20:34:57.423 - Unchanged
2025-02-02 20:33:14.654 - Unchanged
2025-02-03 20:35:20.124 - Unchanged
2025-02-04 20:36:10.740 - Unchanged
2025-02-05 20:37:25.019 - Unchanged