St George's Day is celebrated by the several nations, kingdoms, countries, and cities of which Saint George is the patron saint. St George's Day is celebrated on 23 April, the traditionally accepted date of Saint George's death in AD 303. For Eastern Orthodox Churches who use the Julian calendar, 23 April corresponds to 6 May on the Gregorian calendar.

As Easter often falls close to St George's Day, the church celebration of the feast may be moved from 23 April. In 2011 and 2014, the Anglican and Catholic calendars celebrate St George's Day on the first Monday after Easter Week (2 May and 28 April, respectively).^[1][2][3] Similarly, the Eastern Orthodox celebration of the feast moves accordingly to the first Monday after Easter or, as it is else called, to the Monday of Bright Week.