February.si
The AI guide to the history and traditions of February
Why is February the shortest month, where does leap year come from, and what's the real story behind Valentine's Day and Groundhog Day? Explore the calendar history and cultural traditions of the year's second month.
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What you get
Everything February.si gives you
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Origins and etymology
Where the name February comes from, and how it became the calendar's shortest month.
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Leap year explained
The real rule behind February 29, and why some century years skip it.
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Traditions and holidays
Valentine's Day, Groundhog Day, Black History Month, and more, explained accurately.
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The history and traditions of February
A companion to the calendar history, astronomy, and cultural traditions tied to the year's second month.
Origins and etymology
- Februa — The month's name comes from Februa, a Roman purification festival held mid-month.
- Added by Numa — Tradition credits King Numa Pompilius (c. 713 BC) with adding February to the Roman calendar.
- Julian calendar reform — Julius Caesar's 46 BC reform fixed month lengths, including February's shorter count.
- Gregorian calendar reform — Pope Gregory XIII's 1582 reform refined the leap year rule still used today.
Leap year mechanics
- The leap year rule — A year is a leap year if divisible by 4, except century years, unless divisible by 400.
- Why we need it — Earth's orbit takes about 365.24 days, so leap days keep the calendar aligned with the seasons.
- Leap day traditions — Folk custom in some cultures held that women could propose marriage on February 29.
Traditions and observances
- Black History Month — Established in the US in 1976, rooted in Carter G. Woodson's 1926 Negro History Week.
- Valentine's Day — February 14 tradition linked to St. Valentine, with disputed ties to the Roman festival Lupercalia.
- Groundhog Day — A US and Canadian tradition since 1887, centered on Punxsutawney Phil predicting winter's length.
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