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International Day for Monuments and Sites
Worldwide observanceThe International Day for Monuments and Sites raises awareness on preserving and conserving historical and archeological heritage sites.
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Chinese Language Day
4/20/2026
United Nations observanceChinese Language Day is a United Nations observance that celebrates one of the organization’s 6 official languages – Chinese.
Search on AmazonPatriots' Day
4/20/2026
State HolidayPatriots' Day commemorates the battles of Lexington and Concord in 1775, which were two of the earliest battles in the American Revolutionary War.
ME, MA
Search on AmazonBoston Marathon
4/20/2026
Sporting eventBoston Marathon is one of the world's oldest yearly marathon. It is held annually on Patriot's Day in the month of April.
Search on AmazonWorld Creativity and Innovation Day
4/21/2026
United Nations observanceWorld Creativity and Innovation Day is a United Nations observance in the USA
Search on AmazonSan Jacinto Day
4/21/2026
State HolidaySan Jacinto Day commemorates the Battle of San Jacinto in what is now Harris County, Texas.
TX
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