when was easter

Easter is celebrated on the first Sunday after the first full moon occurring on or after the spring equinox (around March 20-21). This means Easter can fall anywhere between March 22 and April 25. For example, in 2025, the spring equinox falls on March 20, the first full moon after that is on the night of April 12-13, which is a Sunday. Easter then follows the next Sunday, which is April 20, 2025. This method of determining Easter was established by the Council of Nicaea in 325 AD and is still used today, though there are some variations between Western (Gregorian calendar) and Orthodox (Julian calendar) Easter dates.