1240

1240 in other calendars
Gregorian calendar	1240; MCCXL
Ab urbe condita	1993
Armenian calendar	689; ԹՎ ՈՁԹ
Assyrian calendar	5990
Balinese saka calendar	1161–1162
Bengali calendar	647
Berber calendar	2190
English Regnal year	24 Hen. 3 – 25 Hen. 3
Buddhist calendar	1784
Burmese calendar	602
Byzantine calendar	6748–6749
Chinese calendar	己亥年 (Earth Pig); 3936 or 3876; — to —; 庚子年 (Metal Rat); 3937 or 3877
Coptic calendar	956–957
Discordian calendar	2406
Ethiopian calendar	1232–1233
Hebrew calendar	5000–5001
Hindu calendars
- Vikram Samvat	1296–1297
- Shaka Samvat	1161–1162
- Kali Yuga	4340–4341
Holocene calendar	11240
Igbo calendar	240–241
Iranian calendar	618–619
Islamic calendar	637–638
Japanese calendar	En'ō 2 / Ninji 1; (仁治元年)
Javanese calendar	1149–1150
Julian calendar	1240; MCCXL
Korean calendar	3573
Minguo calendar	672 before ROC; 民前672年
Nanakshahi calendar	−228
Thai solar calendar	1782–1783
Tibetan calendar	阴土猪年; (female Earth-Pig); 1366 or 985 or 213; — to —; 阳金鼠年; (male Iron-Rat); 1367 or 986 or 214

Millennium:	2nd millennium
Centuries:	12th century – 13th century – 14th century
Decades:	1210s 1220s 1230s – 1240s – 1250s 1260s 1270s
Years:	1237 1238 1239 – 1240 – 1241 1242 1243

1240 (MCCXL) was a leap year starting on Sunday of the Julian calendar, the 1240th year of the Common Era (CE) and Anno Domini (AD) designations, the 240th year of the 2nd millennium, the 40th year of the 13th century, and the 1st year of the 1240s decade. As of the start of 1240, the Gregorian calendar was 7 days ahead of the Julian calendar, which was the dominant calendar of the time.

Events

Batu Khan and the Golden Horde sack the Ruthenian city of Kiev.
Mandinka prince Sundiata Keita defeats Sosso king Soumaoro Kanté at the Battle of Kirina, beginning the Mali Empire.
July 15 – Russian prince Alexander Nevsky defeats the Swedes in the Battle of the Neva, saving Russia from a full-scale enemy invasion from the North.
End of the civil war era in Norway.
Saint Maurice is started to be portrayed as Moor.