Centuries: 18th century - 19th century - 20th century
Decades: 1770s 1780s 1790s 1800s 1810s - 1820s - 1830s 1840s 1850s 1860s 1870s
Years: 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829
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