GBT
Green Bank Telescope clock correction file
This file records the difference between UTC(GBT) and UTC(GPS).
The observatory distributes this file on the Web, updated about daily.
A discrepancy arose between the observatory-distributed file and the file in this repository (which had been identical to the observatory-distributed one up to that point). Around 2023-03-20 (MJD 60023), the first ~11 entries in the observatory-distributed file were changed to zero. Ryan Lynch expressed surprise that this had occurred, but no resolution had arisen as of 2024-02-14. Since this resulted in the new file failing validation and the file in this repository not updating, at that point I (Anne Archibald) decided to switch those entries to match the observatory values. The old values are available from the version of the file in git tag “gbt-mystery-values”.
If questions arise, contact Ryan S. Lynch rlynch@nrao.edu.
| File | tempo/clock/time_gbt.dat |
| Authority | observatory |
| URL in repository | https://raw.githubusercontent.com/ipta/pulsar-clock-corrections/main/tempo/clock/time_gbt.dat |
| Original download URL | https://www.gb.nrao.edu/~fghigo/timer/time_gbt.dat |
| Format | tempo |
| Bogus last correction | False |
| Clock file start | 2000-12-31 MJD 51909.5 |
| Clock file end | 2024-05-18 MJD 60448.5 |
| Update interval (days) | 1 |
| Last update attempt | 2025-02-04 |
| Last update result | Validation failed |
Log entries from the last few update attempts:
2025-01-26 20:33:58.787 - Validation failed: New version of tempo/clock/time_gbt.dat clock corrections differ from old version where they overlap in 11 places
2025-01-27 20:35:13.606 - Validation failed: New version of tempo/clock/time_gbt.dat clock corrections differ from old version where they overlap in 11 places
2025-01-28 20:35:11.184 - Validation failed: New version of tempo/clock/time_gbt.dat clock corrections differ from old version where they overlap in 11 places
2025-01-29 20:35:37.056 - Validation failed: New version of tempo/clock/time_gbt.dat clock corrections differ from old version where they overlap in 11 places
2025-01-30 20:35:28.903 - Validation failed: New version of tempo/clock/time_gbt.dat clock corrections differ from old version where they overlap in 11 places
2025-01-31 20:34:36.724 - Validation failed: New version of tempo/clock/time_gbt.dat clock corrections differ from old version where they overlap in 11 places
2025-02-01 20:34:47.672 - Validation failed: New version of tempo/clock/time_gbt.dat clock corrections differ from old version where they overlap in 11 places
2025-02-02 20:33:06.291 - Validation failed: New version of tempo/clock/time_gbt.dat clock corrections differ from old version where they overlap in 11 places
2025-02-03 20:35:12.117 - Validation failed: New version of tempo/clock/time_gbt.dat clock corrections differ from old version where they overlap in 11 places
2025-02-04 20:35:58.203 - Validation failed: New version of tempo/clock/time_gbt.dat clock corrections differ from old version where they overlap in 11 places
All clock corrections:
Recent clock corrections:
