1311 (MCCCXI) was a common year starting on Friday of the Julian calendar, the 1311th year of the Common Era (CE) and Anno Domini (AD) designations, the 311th year of the 2nd millennium, the 11th year of the 14th century, and the 2nd year of the 1310s decade. As of the start of 1311, the Gregorian calendar was 8 days ahead of the Julian calendar, which was the dominant calendar of the time.

Millennium: 2nd millennium
Centuries: 13th century14th century15th century
Decades: 1280s  1290s  1300s  – 1310s –  1320s  1330s  1340s
Years: 1308 1309 131013111312 1313 1314
1311 in other calendars
Gregorian calendar1311
MCCCXI
Ab urbe condita2064
Armenian calendar760
ԹՎ ՉԿ
Assyrian calendar6061
Balinese saka calendar1232–1233
Bengali calendar718
Berber calendar2261
English Regnal yearEdw. 2 – 5 Edw. 2
Buddhist calendar1855
Burmese calendar673
Byzantine calendar6819–6820
Chinese calendar庚戌(Metal Dog)
4007 or 3947
    — to —
辛亥年 (Metal Pig)
4008 or 3948
Coptic calendar1027–1028
Discordian calendar2477
Ethiopian calendar1303–1304
Hebrew calendar5071–5072
Hindu calendars
 - Vikram Samvat1367–1368
 - Shaka Samvat1232–1233
 - Kali Yuga4411–4412
Holocene calendar11311
Igbo calendar311–312
Iranian calendar689–690
Islamic calendar710–711
Japanese calendarEnkyō 4 / Ōchō 1
(応長元年)
Javanese calendar1222–1223
Julian calendar1311
MCCCXI
Korean calendar3644
Minguo calendar601 before ROC
民前601年
Nanakshahi calendar−157
Thai solar calendar1853–1854
Tibetan calendar阳金狗年
(male Iron-Dog)
1437 or 1056 or 284
    — to —
阴金猪年
(female Iron-Pig)
1438 or 1057 or 285

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