940

940 in various 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); 3637 or 3430; — to —; 庚子年 (Metal Rat); 3638 or 3431
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

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

Year 940 (CMXL) was a leap year starting on Wednesday (link will display the full calendar) of the Julian calendar.

Events

The tribe of the Polans begins the construction of the following fortified settlements (Giecz, Bnin, Ląd, Gniezno, Poznań, Grzybowo and Ostrów Lednicki) in Greater Poland. The Piast Dynasty under Duke Siemomysł gains control over other groups of Polans along the Upper Vistula, and establishes their rule around Giecz (approximate date).

March 25 – Taira no Masakado, the self-proclaimed "New Emperor" (新皇), is subdued by local rivals who revolt against his rule. His forces are defeated by his cousin, Taira no Sadamori, in Shimōsa Province. Masakado's head is brought back to Emperor Suzaku in Tokyo.^[1]

Saadia Gaon, a Jewish rabbi and philosopher, compiles his Siddur (Jewish prayer book) in Arabic and synagogal poetry in modern-day Iraq (approximate date).

Narita-san ("New victory temple"), a Shingon Buddhist temple, is founded in Chiba (Japan).

^ Turnbull, Stephen (1998). The Samurai Sourcebook. Cassell & Co. p. 199. ISBN 1854095234.
^ Noble, Samuel (December 17, 2010). "Sulayman al-Ghazzi". In Thomas, David; Mallett, Alexander (eds.). Christian-Muslim Relations. A Bibliographical History. Volume 2 (900-1050). BRILL. p. 617. ISBN 978-90-04-21618-1. Retrieved January 16, 2024.

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) 3637 or 3430 — to — 庚子年 (Metal Rat) 3638 or 3431
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