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.
| 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 |
| 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 |
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Events
change- 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
change- 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
change- 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
change- 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)