Today

How this is computed

The Hebrew date uses the arithmetic calendar following Dershowitz and Reingold, Calendrical Calculations. It matches the rabbinic calendar used since Hillel II's fourth-century codification.

The Islamic date is the tabular (arithmetic) calendar — the scholarly reference. Traditional observance depends on the local sighting of the new moon and can differ by ±1–2 days.

The Christian liturgical season uses the Western (Roman) calendar with Easter computed via the anonymous Gregorian algorithm. Eastern Orthodox observance follows the Julian Paschalion and typically falls on a different date.

The moon phase is a synodic approximation accurate to about one day — adequate for liturgical context, not for ephemeris work.

Hindu, Buddhist, Jain, Sikh, and Zoroastrian festivals depend on luni-solar calculations that vary by region and panchang. The dates shown are drawn from published calendars and cover the current and following year. This table is curated, not computed.

Everything here is computed in your browser from your device's clock. If your system time is off, so is this page.