- Next Ramadan begins
- Monday, 8 February 2027 — expected — local moon sighting can shift it a day
- Counting down
- 99 days away
- Is 2026 a leap year
- no, 365 days
- Next 29 February
- 29 February 2028 — in 485 days
- Today
- Sunday, 1 November 2026 · ISO week 44 · day 305 of the year
Computed on every visit from the time-zone database and standard astronomical formulas, so these never go stale. The article below is unchanged.
Leap years work in other calendars by adding extra days, intercalating full leap months, or relying on astronomical observations to reconcile the solar year’s 365.2422 days and the lunar month’s 29.53 days. While the Gregorian calendar adds 97 leap days every 400 years, non-Gregorian systems use distinct methods—such as the Hebrew calendar inserting an extra month in 7 out of 19 years, or Persia’s Solar Hijri directly tracking the spring equinox.
This overview covers the specific leap mechanics across major world systems, including the Islamic civil calendar’s 30-year cycle, Ethiopia’s 13th month, and East Asia’s traditional solar terms, while comparing the historical accuracy and trade-offs of each approach.
