1280

1280 (MCCLXXX) was a leap year starting on Monday of the Julian calendar, the 1280th year of the Common Era (CE) and Anno Domini (AD) designations, the 280th year of the 2nd millennium, the 80th year of the 13th century, and the 1st year of the 1280s decade. As of the start of 1280, 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:	1250s  1260s  1270s  – 1280s –  1290s  1300s  1310s
Years:	1277 1278 1279 – 1280 – 1281 1282 1283

1280 in other calendars

Gregorian calendar	1280 MCCLXXX
Ab urbe condita	2033
Armenian calendar	729 ԹՎ ՉԻԹ
Assyrian calendar	6030
Balinese saka calendar	1201–1202
Bengali calendar	687
Berber calendar	2230
English Regnal year	8 Edw. 1 – 9 Edw. 1
Buddhist calendar	1824
Burmese calendar	642
Byzantine calendar	6788–6789
Chinese calendar	己卯年 (Earth Rabbit) 3976 or 3916     — to — 庚辰年 (Metal Dragon) 3977 or 3917
Coptic calendar	996–997
Discordian calendar	2446
Ethiopian calendar	1272–1273
Hebrew calendar	5040–5041
Hindu calendars
- Vikram Samvat	1336–1337
- Shaka Samvat	1201–1202
- Kali Yuga	4380–4381
Holocene calendar	11280
Igbo calendar	280–281
Iranian calendar	658–659
Islamic calendar	678–679
Japanese calendar	Kōan 3 (弘安３年)
Javanese calendar	1190–1191
Julian calendar	1280 MCCLXXX
Korean calendar	3613
Minguo calendar	632 before ROC 民前632年
Nanakshahi calendar	−188
Thai solar calendar	1822–1823
Tibetan calendar	阴土兔年 (female Earth-Rabbit) 1406 or 1025 or 253     — to — 阳金龙年 (male Iron-Dragon) 1407 or 1026 or 254

Events

• Construction on the northern section of the Grand Canal of China begins.
• The final stage of the Lincoln Cathedral is completed.
• King Edward I of England forms the Court of King's Bench. The Bench hears petitions for justice instead of the king hearing them himself.
• The Wolf minimum of solar activity begins (approximate date).
• The Asen dynasty of tsars of Bulgaria ends.
• Syria tries to leave from the Mamluk sultanate of Egypt. Qalawun defeats the rebels and keeps Syria in the Egyptian sultanate.
• The second of two main surveys of the Hundred Rolls is completed. It began in 1279.
• Turin is conquered by Thomas III of Savoy. It becomes the capital of the House of Savoy.
• Osman starts to rule.

Births

• Birger of Sweden (d. 1321)
• Wu Zhen, Chinese painter (d. 1354)

Deaths

• May 9 – Magnus VI of Norway
• August 22 – Pope Nicholas III (b. 1218)
• November 15 – Albertus Magnus, German theologian