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October 31 Holidays & Observances

2 holidays observed on October 31 in the 2026–2030 window.

Halloween fun · International Every year World Cities Day awareness · International Every year

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October 31 — quick answers

How many holidays fall on October 31?
In the 2026–2030 window, 2 holidays and observance fall on October 31: Halloween, World Cities Day.
What is celebrated on October 31?
October 31 is home to Halloween, World Cities Day. Each one has its own page with history and a live countdown.
Are any October 31 holidays public holidays?
None of the observances on October 31 are US federal holidays; they are celebrated informally by people, brands and communities.