Convert any date between six calendar systems - entirely in your browser.
| Calendar | Date |
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Gregorian, Islamic, Hebrew, Persian and Buddhist dates are computed using your browser's built-in Intl calendar support (the same ICU library used across the web platform). Julian dates are computed directly via Julian Day Number arithmetic, since Julian isn't one of the standard calendar systems browsers implement.
The Islamic (Hijri) date shown is calculated (Umm al-Qura-based) - religious observance in practice depends on local moon sighting and can differ by a day. Historical dates in any calendar are proleptic - calendar rules projected backward, not necessarily how dates were actually recorded at the time.
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