| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1843 by topic |
|---|
| Humanities |
| By country |
| Other topics |
| Lists of leaders |
| Birth and death categories |
| Establishments and disestablishments categories |
| Works category |
| Gregorian calendar | 1843 MDCCCXLIII |
| Ab urbe condita | 2596 |
| Armenian calendar | 1292 ԹՎ ՌՄՂԲ |
| Assyrian calendar | 6593 |
| Balinese saka calendar | 1764–1765 |
| Bengali calendar | 1250 |
| Berber calendar | 2793 |
| British Regnal year | 6 Vict. 1 – 7 Vict. 1 |
| Buddhist calendar | 2387 |
| Burmese calendar | 1205 |
| Byzantine calendar | 7351–7352 |
| Chinese calendar | 壬寅年 (Water Tiger) 4540 or 4333 — to — 癸卯年 (Water Rabbit) 4541 or 4334 |
| Coptic calendar | 1559–1560 |
| Discordian calendar | 3009 |
| Ethiopian calendar | 1835–1836 |
| Hebrew calendar | 5603–5604 |
| Hindu calendars | |
| - Vikram Samvat | 1899–1900 |
| - Shaka Samvat | 1764–1765 |
| - Kali Yuga | 4943–4944 |
| Holocene calendar | 11843 |
| Igbo calendar | 843–844 |
| Iranian calendar | 1221–1222 |
| Islamic calendar | 1258–1259 |
| Japanese calendar | Tenpō 14 (天保１４年) |
| Javanese calendar | 1770–1771 |
| Julian calendar | Gregorian minus 12 days |
| Korean calendar | 4176 |
| Minguo calendar | 69 before ROC 民前69年 |
| Nanakshahi calendar | 375 |
| Thai solar calendar | 2385–2386 |
| Tibetan calendar | 阳水虎年 (male Water-Tiger) 1969 or 1588 or 816 — to — 阴水兔年 (female Water-Rabbit) 1970 or 1589 or 817 |
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1843 (MDCCCXLIII) was a common year starting on Sunday of the Gregorian calendar and a common year starting on Friday of the Julian calendar, the 1843rd year of the Common Era (CE) and Anno Domini (AD) designations, the 843rd year of the 2nd millennium, the 43rd year of the 19th century, and the 4th year of the 1840s decade. As of the start of 1843, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.