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Millennium: 2nd millennium
1804 in various calendars
Gregorian calendar1804
French Republican calendar12–13
Ab urbe condita2557
Armenian calendar1253
Assyrian calendar6554
Balinese saka calendar1725–1726
Bengali calendar1211
Berber calendar2754
British Regnal year44 Geo. 3 – 45 Geo. 3
Buddhist calendar2348
Burmese calendar1166
Byzantine calendar7312–7313
Chinese calendar癸亥年 (Water Pig)
4501 or 4294
    — to —
甲子年 (Wood Rat)
4502 or 4295
Coptic calendar1520–1521
Discordian calendar2970
Ethiopian calendar1796–1797
Hebrew calendar5564–5565
Hindu calendars
 - Vikram Samvat1860–1861
 - Shaka Samvat1725–1726
 - Kali Yuga4904–4905
Holocene calendar11804
Igbo calendar804–805
Iranian calendar1182–1183
Islamic calendar1218–1219
Japanese calendarKyōwa 3 / Bunka 1
Javanese calendar1730–1731
Julian calendarGregorian minus 12 days
Korean calendar4137
Minguo calendar108 before ROC
Nanakshahi calendar336
Thai solar calendar2346–2347
Tibetan calendar阴水猪年
(female Water-Pig)
1930 or 1549 or 777
    — to —
(male Wood-Rat)
1931 or 1550 or 778
July 11: Burr shoots Hamilton.

1804 (MDCCCIV) was a leap year starting on Sunday of the Gregorian calendar and a leap year starting on Friday of the Julian calendar, the 1804th year of the Common Era (CE) and Anno Domini (AD) designations, the 804th year of the 2nd millennium, the 4th year of the 19th century, and the 5th year of the 1800s decade. As of the start of 1804, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.






December 2: The Coronation of Napoleon

Date unknown[edit]



Eliza R. Snow
J. L. Runeberg


Richard Owen
Ludwig Feuerbach
Jane Irwin Harrison
Franklin Pierce
Carl Gustav Jacob Jacobi
Benjamin Disraeli

Date unknown[edit]



Charlotte Lennox
Joseph Priestley
Immanuel Kant



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