1865 (MDCCCLXV) was a common year starting on Sunday of the Gregorian calendar and a common year starting on Friday of the Julian calendar, the 1865th year of the Common Era (CE) and Anno Domini (AD) designations, the 865th year of the 2nd millennium, the 65th year of the 19th century, and the 6th year of the 1860s decade. As of the start of 1865, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.

Millennium: 2nd millennium
Centuries: 18th century19th century20th century
Decades: 1830s  1840s  1850s  – 1860s –  1870s  1880s  1890s
Years: 1862 1863 186418651866 1867 1868
1865 in other calendars
Gregorian calendar1865
MDCCCLXV
Ab urbe condita2618
Armenian calendar1314
ԹՎ ՌՅԺԴ
Assyrian calendar6615
Bahá'í calendar21–22
Balinese saka calendar1786–1787
Bengali calendar1272
Berber calendar2815
British Regnal year28 Vict. 1 – 29 Vict. 1
Buddhist calendar2409
Burmese calendar1227
Byzantine calendar7373–7374
Chinese calendar甲子(Wood Rat)
4561 or 4501
    — to —
乙丑年 (Wood Ox)
4562 or 4502
Coptic calendar1581–1582
Discordian calendar3031
Ethiopian calendar1857–1858
Hebrew calendar5625–5626
Hindu calendars
 - Vikram Samvat1921–1922
 - Shaka Samvat1786–1787
 - Kali Yuga4965–4966
Holocene calendar11865
Igbo calendar865–866
Iranian calendar1243–1244
Islamic calendar1281–1282
Japanese calendarGenji 2 / Keiō 1
(慶応元年)
Javanese calendar1793–1794
Julian calendarGregorian minus 12 days
Korean calendar4198
Minguo calendar47 before ROC
民前47年
Nanakshahi calendar397
Thai solar calendar2407–2408
Tibetan calendar阳木鼠年
(male Wood-Rat)
1991 or 1610 or 838
    — to —
阴木牛年
(female Wood-Ox)
1992 or 1611 or 839

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