1833 (MDCCCXXXIII) was a common year starting on Tuesday of the Gregorian calendar and a common year starting on Sunday of the Julian calendar, the 1833rd year of the Common Era (CE) and Anno Domini (AD) designations, the 833rd year of the 2nd millennium, the 33rd year of the 19th century, and the 4th year of the 1830s decade. As of the start of 1833, 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: 1800s  1810s  1820s  – 1830s –  1840s  1850s  1860s
Years: 1830 1831 183218331834 1835 1836
1833 in other calendars
Gregorian calendar1833
MDCCCXXXIII
Ab urbe condita2586
Armenian calendar1282
ԹՎ ՌՄՁԲ
Assyrian calendar6583
Balinese saka calendar1754–1755
Bengali calendar1240
Berber calendar2783
British Regnal yearWill. 4 – 4 Will. 4
Buddhist calendar2377
Burmese calendar1195
Byzantine calendar7341–7342
Chinese calendar壬辰(Water Dragon)
4529 or 4469
    — to —
癸巳年 (Water Snake)
4530 or 4470
Coptic calendar1549–1550
Discordian calendar2999
Ethiopian calendar1825–1826
Hebrew calendar5593–5594
Hindu calendars
 - Vikram Samvat1889–1890
 - Shaka Samvat1754–1755
 - Kali Yuga4933–4934
Holocene calendar11833
Igbo calendar833–834
Iranian calendar1211–1212
Islamic calendar1248–1249
Japanese calendarTenpō 4
(天保4年)
Javanese calendar1760–1761
Julian calendarGregorian minus 12 days
Korean calendar4166
Minguo calendar79 before ROC
民前79年
Nanakshahi calendar365
Thai solar calendar2375–2376
Tibetan calendar阳水龙年
(male Water-Dragon)
1959 or 1578 or 806
    — to —
阴水蛇年
(female Water-Snake)
1960 or 1579 or 807

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