| Millennium: | 2nd millennium |
|---|---|
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| Years: |
| 1818 by topic |
|---|
| Humanities |
| By country |
| Other topics |
| Lists of leaders |
| Birth and death categories |
| Establishments and disestablishments categories |
| Works category |
| Gregorian calendar | 1818 MDCCCXVIII |
| Ab urbe condita | 2571 |
| Armenian calendar | 1267 ԹՎ ՌՄԿԷ |
| Assyrian calendar | 6568 |
| Balinese saka calendar | 1739–1740 |
| Bengali calendar | 1225 |
| Berber calendar | 2768 |
| British Regnal year | 58 Geo. 3 – 59 Geo. 3 |
| Buddhist calendar | 2362 |
| Burmese calendar | 1180 |
| Byzantine calendar | 7326–7327 |
| Chinese calendar | 丁丑年 (Fire Ox) 4515 or 4308 — to — 戊寅年 (Earth Tiger) 4516 or 4309 |
| Coptic calendar | 1534–1535 |
| Discordian calendar | 2984 |
| Ethiopian calendar | 1810–1811 |
| Hebrew calendar | 5578–5579 |
| Hindu calendars | |
| - Vikram Samvat | 1874–1875 |
| - Shaka Samvat | 1739–1740 |
| - Kali Yuga | 4918–4919 |
| Holocene calendar | 11818 |
| Igbo calendar | 818–819 |
| Iranian calendar | 1196–1197 |
| Islamic calendar | 1233–1234 |
| Japanese calendar | Bunka 15 / Bunsei 1 (文政元年) |
| Javanese calendar | 1745–1746 |
| Julian calendar | Gregorian minus 12 days |
| Korean calendar | 4151 |
| Minguo calendar | 94 before ROC 民前94年 |
| Nanakshahi calendar | 350 |
| Thai solar calendar | 2360–2361 |
| Tibetan calendar | 阴火牛年 (female Fire-Ox) 1944 or 1563 or 791 — to — 阳土虎年 (male Earth-Tiger) 1945 or 1564 or 792 |
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1818 (MDCCCXVIII) was a common year starting on Thursday of the Gregorian calendar and a common year starting on Tuesday of the Julian calendar, the 1818th year of the Common Era (CE) and Anno Domini (AD) designations, the 818th year of the 2nd millennium, the 18th year of the 19th century, and the 9th year of the 1810s decade. As of the start of 1818, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.