JuliaAstro / JuliaAstro/AstroTime.jl
GPS epoch
Nobody has claimed this yet.
- Dominant language
- Julia
- Stars
- 38
- Forks
- 11
- PR merge metrics
- No merged PRs in 30d
Description
This package helpfully defines GPS_EPOCH here
https://github.com/JuliaAstro/AstroTime.jl/blob/a891ffef6fb142d37b8f8836b3ec75da4955606d/src/Epochs/epoch_constants.jl#L7
However, I think it's incorrect to define it in TT. It should be 1980-01-06 UTC according to wikipedia and also section 11.4.3.3 of the manual from the US Coast Guard. So the definition should be equivalent to from_utc(1980,1,6) or TAIEpoch(1980, 1, 6, 0, 0, 19.0).
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start in src/Epochs/epoch_constants.jl at line 7, then inspect the existing from_utc and TAIEpoch APIs used to represent epochs. Verify GPS_EPOCH against the UTC date and the equivalent TAI value given in the issue. Done means the constant represents 1980-01-06 UTC consistently with those APIs.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- julia
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 45/100