Hijri-Gregorian Date Converter

Convert Gregorian calendar dates to astronomical Islamic Hijri lunar calendar dates.

Calculation Parameters

Notice an error in formula or regulations?

Mathematical Simulation & Informational Notice

Valid as of: October 2026 IEEE-754 Deterministic Standards

This calculator is built on deterministic mathematical and algorithmic models. Results are simulations for educational and estimation purposes and should not be used as official or legally binding records.

Statutory Framework: IEEE-754 / ISO High-Precision Computing Standards

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Calculate Friday congregational prayer (Jummah) time aligned with midday solar noon.

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Ramadan Day Tracker

Track the current day of Ramadan and countdown days remaining until Eid al-Fitr.

Mathematical Simulation & Informational Notice: This calculator is built on deterministic mathematical and algorithmic models. Results are simulations for educational and estimation purposes and should not be used as official or legally binding records.

This report was generated using the CALCONOVA (calconova.com) mathematical engine. Computations are for informational purposes and do not constitute official financial or legal counsel. • © 2026 CALCONOVA (Universal Standard)