March 31·Every year

World Backup Day

March 31st — one day before April Fools' — is World Backup Day, the ideal moment to remember that 29% of data loss is accidental and 30 million hard drives fail every year. The day was proposed on Reddit in 2011 and remains the most practically useful internet holiday ever created.

Category: Silly
Observed in: United StatesUnited KingdomGermanyJapan

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Notable · 2023

A tornado caused the collapse of a venue hosting a sold-out concert in Belvidere, Illinois, United States, resulting in one death and 48 injuries.

2023A historic tornado outbreak occurs in the American Midwest and South.
2018Start of the 2018 Armenian revolution.
2016NASA astronaut Scott Kelly and Roscosmos cosmonaut Mikhail Kornienko return to Earth after a yearlong mission at the International Space Station.