tempoch

Why it exists

tempoch keeps time scales explicit, so you do not have to guess what a timestamp means later. It provides the time layer shared across the Siderust crates.

Key Features

• Generic Time<S> instants by time-scale
• Built-in UTC ↔ TT/MJD conversion via chrono
• Automatic ΔT = TT − UT handling
• Period intervals with intersection / complement
• No-std compatible

Getting Started

# Add to your Cargo.toml
[dependencies]
tempoch = "0.6.4"

# Convert UTC to Julian Date
use chrono::Utc;
use tempoch::{JulianDate, MJD, Time};

let now_jd = JulianDate::from_utc(Utc::now());
let now_mjd: Time<MJD> = now_jd.to::<MJD>();
println!("JD(TT): {now_jd}");
println!("MJD(TT): {now_mjd}");

Contributing

We welcome contributions! Here's how you can help:

• 1 Fork the repository and create your branch from main
• 2 Make your changes and add tests if applicable
• 3 Ensure all tests pass with cargo test
• 4 Submit a pull request with a clear description

License

This project is licensed under the AGPL-3.0 license. See the LICENSE file for details.