1840

Century:	18th century - 19th century - 20th century
Decade:	1810s 1820s 1830s - 1840s - 1850s 1860s 1870s
Saal:	1837 1838 1839 - 1840 - 1841 1842 1843

1840 ek leap saal rahaa jon ki budh ke roj suruu bhais rahaa.

Ghatna

America ke 14th Presidential election me Whig Party ke William Henry Harrison, Democratic Party ke Martin Van Buren ke 234 electoral college votes to 60 se harais. Buren incubent President rahaa .^[1]

7 May - Pyotr Ilyich Tchaikovsky ek Russian composer rahaa, jiske janam Votkinsk, Udmurtia, Russian Empire me bhais rahaa (maut: 6 November 1893) .