Back 1864 Abkhazian 1864 Afrikaans 1864 ALS 1864 እ.ኤ.አ. Amharic 1864 AN 1864 Arabic 1864 ARY 1864 ARZ 1864 AST 1864 AVK
| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
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| Years: |
| 1864 by topic |
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| Humanities |
| By country |
| Other topics |
| Lists of leaders |
| Birth and death categories |
| Establishments and disestablishments categories |
| Works category |
| Gregorian calendar | 1864 MDCCCLXIV |
| Ab urbe condita | 2617 |
| Armenian calendar | 1313 ԹՎ ՌՅԺԳ |
| Assyrian calendar | 6614 |
| Baháʼí calendar | 20–21 |
| Balinese saka calendar | 1785–1786 |
| Bengali calendar | 1271 |
| Berber calendar | 2814 |
| British Regnal year | 27 Vict. 1 – 28 Vict. 1 |
| Buddhist calendar | 2408 |
| Burmese calendar | 1226 |
| Byzantine calendar | 7372–7373 |
| Chinese calendar | 癸亥年 (Water Pig) 4561 or 4354 — to — 甲子年 (Wood Rat) 4562 or 4355 |
| Coptic calendar | 1580–1581 |
| Discordian calendar | 3030 |
| Ethiopian calendar | 1856–1857 |
| Hebrew calendar | 5624–5625 |
| Hindu calendars | |
| - Vikram Samvat | 1920–1921 |
| - Shaka Samvat | 1785–1786 |
| - Kali Yuga | 4964–4965 |
| Holocene calendar | 11864 |
| Igbo calendar | 864–865 |
| Iranian calendar | 1242–1243 |
| Islamic calendar | 1280–1281 |
| Japanese calendar | Bunkyū 4 / Genji 1 (元治元年) |
| Javanese calendar | 1792–1793 |
| Julian calendar | Gregorian minus 12 days |
| Korean calendar | 4197 |
| Minguo calendar | 48 before ROC 民前48年 |
| Nanakshahi calendar | 396 |
| Thai solar calendar | 2406–2407 |
| Tibetan calendar | 阴水猪年 (female Water-Pig) 1990 or 1609 or 837 — to — 阳木鼠年 (male Wood-Rat) 1991 or 1610 or 838 |
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1864 (MDCCCLXIV) was a leap year starting on Friday of the Gregorian calendar and a leap year starting on Wednesday of the Julian calendar, the 1864th year of the Common Era (CE) and Anno Domini (AD) designations, the 864th year of the 2nd millennium, the 64th year of the 19th century, and the 5th year of the 1860s decade. As of the start of 1864, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.