Overview
hijri.h converts between Gregorian and Hijri dates. It is a single-file C
Quick start
Two files
API reference
Every public type and function in hijri.h. All angles are in degrees, all
Hijri calendar API (C)
Convert between Gregorian and Hijri dates with hijri.h, a dependency-free C header covering tabular arithmetic, Sun and Moon positions, local crescent visibility predicates, and the Yallop and Odeh visibility models. Start with the overview, follow the quick start, then dive into the full API reference.