See one date in other calendars

The job

Scheduling across cultures means reading the same day in different calendars: a deadline in the Persian year, a holiday in the Hebrew year, an era date in Japanese.

Convert

Pick the Gregorian date. The tool renders it via the browser's Intl engine in Gregorian, Buddhist, Chinese, Hebrew, both Islamic variants, Japanese era, and Persian — plus the ISO week.

• The two Islamic lines differ: "astronomical" follows moon sighting conventions, "civil" uses a fixed arithmetic table.
• Japanese shows the era year (Reiwa 8 = 2026) alongside the Gregorian year.

Worked example

2026-09-27 lands as 1 Nowruz-adjacent… — the actual reads depend on the browser's data; lunisolar calendars can disagree by a day between Chrome and Firefox.

Where it stops

Years 1–9999. Only the calendars Intl ships — no Mayan, no ISO week-date input, no historical Julian/Gregorian switchover handling. Conversion shows the date; it does not schedule across timezones.