Back سنة كبيسة تبدأ يوم الإثنين Arabic سنه كبيسه تبتدى يوم اتنين ARZ Kelamė̄jė metā metā, katrėi prasėded panedielie BAT-SMG Высакосны год, які пачынаецца ў панядзелак BE-X-OLD Високосна година, започваща в понеделник Bulgarian Superjaro komenciĝanta lunde Esperanto Anexo:Años bisiestos que comienzan en lunes Spanish Astelehenez hasitako bisurte Basque Année bissextile commençant un lundi French Skrikkeljier fan moandei ôf Frisian
A leap year starting on Monday is any year with 366 days (i.e. it includes 29 February) that begins on Monday, 1 January, and ends on Tuesday, 31 December. Its dominical letters hence are GF. The most recent year of such kind was 2024 and the next one will be 2052 in the Gregorian calendar[1] or, likewise, 2008 and 2036 in the obsolete Julian calendar.
Any leap year that starts on Monday has two Friday the 13ths: those two in this leap year occur in September and December. Common years starting on Tuesday share this characteristic.
- ^ Robert van Gent (2017). "The Mathematics of the ISO 8601 Calendar". Utrecht University, Department of Mathematics. Retrieved 20 July 2017.