1240

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.

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	ས་མོ་ཕག་ལོ་ (female Earth-Boar) 1366 or 985 or 213     — to — ལྕགས་ཕོ་བྱི་བ་ལོ་ (male Iron-Rat) 1367 or 986 or 214

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.

Births

• Abulafia, Maltese Jewish philosopher (died 1292)
• Pope Benedict XI (died 1304)
• Stephen V of Hungary (died 1272)
• Sigerus of Brabant, French theologian (died 1284)
• Albert the Degenerate, landgrave of Thuringia (approximate date; died 1314)

Deaths

• April 11 – Llywelyn the Great, King of Gwynedd
• Ibn Arabi, Andalusian Arab philosopher
• Jacques de Vitry, French historian and theologian (born c. 1180)
• William de Warenne, 6th Earl of Surrey (born 1166)

Monarchs/Presidents

• Aragon – James I King of Aragon and count of Barcelona (reigned from 1213 to 1276)
• Castile – Ferdinand III, the Saint King of Castile and León (reigned from 1217 to 1252)