| .github/workflows | ||
| .reuse | ||
| bulletind | ||
| LICENSES | ||
| .gitignore | ||
| .pre-commit-config.yaml | ||
| Makefile | ||
| pyproject.toml | ||
| README.md | ||
| setup.cfg | ||
Purpose
bulletind provides access to the IERS "Bulletin D" data to Python or to other software that can process JSON data.
"Bulletin D" is the publication that specifies the "DUT1 offset", the difference between UTC and UT1, in units of 0.1 seconds. This is the value that is ostensibly transmitted on various broadcast time signals, such as WWVB.
The source of the data is https://datacenter.iers.org/availableVersions.php?id=17 and covers April 1991 through the present. (the oldest Bulletin available is Number 21 issued 1991-04-22)
Use
bulletind includes bulletin data that was available the last time the software
was updated. Further updates can be downloaded to a per-user cache with
the bulletind update command or the get_bulletin_d_data() function.
Cached data can be printed as json with bulletind json, as tabular data with
bulletind table, or accessed with the get_cached_bulletin_d_data() function.
The structure of the data is described by the BulletinDInfo type.
In json and tabular formats, dates are represented in the ISO standard format
YYYY-mm-dd.
Development status
This project was started as a way to prototype use of Bulletin D historical data in wwvbgen. However, the quality of the historical data was not adequate and the project is archived.