940

940 (CMXL) was a leap year starting on Wednesday of the Julian calendar, the 940th year of the Common Era (CE) and Anno Domini (AD) designations, the 940th year of the 1st millennium, the 40th year of the 10th century, and the 1st year of the 940s decade. As of the start of 940, the Gregorian calendar was 5 days ahead of the Julian calendar, which was the dominant calendar of the time.

Millennium:	1st millennium
Centuries:	9th century – 10th century – 11th century
Decades:	910s  920s  930s  – 940s –  950s  960s  970s
Years:	937 938 939 – 940 – 941 942 943

940 in other calendars

Gregorian calendar	940 CMXL
Ab urbe condita	1693
Armenian calendar	389 ԹՎ ՅՁԹ
Assyrian calendar	5690
Balinese saka calendar	861–862
Bengali calendar	347
Berber calendar	1890
Buddhist calendar	1484
Burmese calendar	302
Byzantine calendar	6448–6449
Chinese calendar	己亥年 (Earth Pig) 3636 or 3576     — to — 庚子年 (Metal Rat) 3637 or 3577
Coptic calendar	656–657
Discordian calendar	2106
Ethiopian calendar	932–933
Hebrew calendar	4700–4701
Hindu calendars
- Vikram Samvat	996–997
- Shaka Samvat	861–862
- Kali Yuga	4040–4041
Holocene calendar	10940
Iranian calendar	318–319
Islamic calendar	328–329
Japanese calendar	Tengyō 3 (天慶３年)
Javanese calendar	840–841
Julian calendar	940 CMXL
Korean calendar	3273
Minguo calendar	972 before ROC 民前972年
Nanakshahi calendar	−528
Seleucid era	1251/1252 AG
Thai solar calendar	1482–1483
Tibetan calendar	阴土猪年 (female Earth-Pig) 1066 or 685 or −87     — to — 阳金鼠年 (male Iron-Rat) 1067 or 686 or −86

Events

• Saadia Gaon makes his siddur (Jewish prayer book) in Iraq.
• Narita-san Temple is founded in Chiba, Japan.
• The Liao Dynasty stops the rule that a younger sister replace an older sister who died in marriage.

Births

• Abu'l-Wafa, Iranian mathematician
• Brian Boru, high king of Ireland

Deaths

• July 20 – Ibn Muqla, Abbasid vizier and calligrapher
• December 25 – Makan ibn Kaki, Dailamite warlord
• Taira no Masakado, leader of the Taira Clan