| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1858 by topic |
|---|
| Humanities |
| By country |
| Other topics |
| Lists of leaders |
| Birth and death categories |
| Establishments and disestablishments categories |
| Works category |
| Gregorian calendar | 1858 MDCCCLVIII |
| Ab urbe condita | 2611 |
| Armenian calendar | 1307 ԹՎ ՌՅԷ |
| Assyrian calendar | 6608 |
| Baháʼí calendar | 14–15 |
| Balinese saka calendar | 1779–1780 |
| Bengali calendar | 1265 |
| Berber calendar | 2808 |
| British Regnal year | 21 Vict. 1 – 22 Vict. 1 |
| Buddhist calendar | 2402 |
| Burmese calendar | 1220 |
| Byzantine calendar | 7366–7367 |
| Chinese calendar | 丁巳年 (Fire Snake) 4555 or 4348 — to — 戊午年 (Earth Horse) 4556 or 4349 |
| Coptic calendar | 1574–1575 |
| Discordian calendar | 3024 |
| Ethiopian calendar | 1850–1851 |
| Hebrew calendar | 5618–5619 |
| Hindu calendars | |
| - Vikram Samvat | 1914–1915 |
| - Shaka Samvat | 1779–1780 |
| - Kali Yuga | 4958–4959 |
| Holocene calendar | 11858 |
| Igbo calendar | 858–859 |
| Iranian calendar | 1236–1237 |
| Islamic calendar | 1274–1275 |
| Japanese calendar | Ansei 5 (安政５年) |
| Javanese calendar | 1786–1787 |
| Julian calendar | Gregorian minus 12 days |
| Korean calendar | 4191 |
| Minguo calendar | 54 before ROC 民前54年 |
| Nanakshahi calendar | 390 |
| Thai solar calendar | 2400–2401 |
| Tibetan calendar | 阴火蛇年 (female Fire-Snake) 1984 or 1603 or 831 — to — 阳土马年 (male Earth-Horse) 1985 or 1604 or 832 |
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1858 (MDCCCLVIII) was a common year starting on Friday of the Gregorian calendar and a common year starting on Wednesday of the Julian calendar, the 1858th year of the Common Era (CE) and Anno Domini (AD) designations, the 858th year of the 2nd millennium, the 58th year of the 19th century, and the 9th year of the 1850s decade. As of the start of 1858, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.