1285 (MCCLXXXV) was a common year starting on Monday of the Julian calendar, the 1285th year of the Common Era (CE) and Anno Domini (AD) designations, the 285th year of the 2nd millennium, the 85th year of the 13th century, and the 6th year of the 1280s decade. As of the start of 1285, the Gregorian calendar was 7 days ahead of the Julian calendar, which was the dominant calendar of the time.

Millennium: 2nd millennium
Centuries: 12th century13th century14th century
Decades: 1250s  1260s  1270s  – 1280s –  1290s  1300s  1310s
Years: 1282 1283 128412851286 1287 1288
1285 in other calendars
Gregorian calendar1285
Ab urbe condita2038
Armenian calendar734
Assyrian calendar6035
Balinese saka calendar1206–1207
Bengali calendar692
Berber calendar2235
English Regnal year13 Edw. 1 – 14 Edw. 1
Buddhist calendar1829
Burmese calendar647
Byzantine calendar6793–6794
Chinese calendar甲申(Wood Monkey)
3981 or 3921
    — to —
乙酉年 (Wood Rooster)
3982 or 3922
Coptic calendar1001–1002
Discordian calendar2451
Ethiopian calendar1277–1278
Hebrew calendar5045–5046
Hindu calendars
 - Vikram Samvat1341–1342
 - Shaka Samvat1206–1207
 - Kali Yuga4385–4386
Holocene calendar11285
Igbo calendar285–286
Iranian calendar663–664
Islamic calendar683–684
Japanese calendarKōan 8
Javanese calendar1195–1196
Julian calendar1285
Korean calendar3618
Minguo calendar627 before ROC
Nanakshahi calendar−183
Thai solar calendar1827–1828
Tibetan calendar阳木猴年
(male Wood-Monkey)
1411 or 1030 or 258
    — to —
(female Wood-Rooster)
1412 or 1031 or 259

Events change