Shaum

A production-grade Rust library for Islamic fasting (Shaum) jurisprudence with high-precision astronomical calculations for Hilal visibility.

This crate is a facade that re-exports functionality from the shaum ecosystem.

Modules

• types: Core types (FastingStatus, GeoCoordinate, etc.)
• calendar: Hijri calendar conversion
• astronomy: Astronomical calculations (Sun/Moon position, visibility)
• rules: Jurisprudence rules engine (optional)
• network: Network capabilities (optional)

Usage

use shaum::prelude::*;
use chrono::NaiveDate;

let date = NaiveDate::from_ymd_opt(2025, 6, 5).unwrap();
let analysis = shaum::analyze_date(date); // Result<FastingAnalysis, ShaumError>