MIT License

Copyright (c) 2024 Benedikt Gunnar Ófeigsson, Veðurstofan Íslands (Icelandic Met Office)

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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## Third-Party Components

This software incorporates code and concepts from the following sources:

### GPS Time Conversion Algorithms
The core GPS time conversion algorithms are based on implementations from:
- The LIGO Scientific Collaboration's glue library (LGPL)
- GPS time standards and specifications from the Interface Control Documents (ICD-GPS-200)

### Leap Second Data
Leap second data is sourced from:
- International Earth Rotation and Reference Systems Service (IERS)
- United States Naval Observatory (USNO) leap second tables
- GPS Interface Control Documents

### Scientific Standards
Time conversion algorithms comply with:
- GPS Interface Control Document ICD-GPS-200
- RINEX format specifications (IGS/RTCM)
- International Terrestrial Reference Frame (ITRF) standards

## Attribution

If you use GTimes in scientific publications, please consider citing:

```
Ófeigsson, B. G., & Gonzalez, M. F. (2024). GTimes: High-precision GPS time 
conversion and processing library. Veðurstofan Íslands (Icelandic Met Office).
https://github.com/bgo-ehi/gtimes
```

## Disclaimer

This software is provided for scientific and educational purposes. While every
effort has been made to ensure accuracy, users should validate results for
their specific applications. The authors and Veðurstofan Íslands assume no
responsibility for any consequences arising from the use of this software.

For critical applications requiring certified GPS time accuracy, users should
consult official GPS documentation and validation procedures.