This is our day guide for Monday December 15th 2025 which shows you at a glance what's happening on this day around the world. Using the calendar on this page, you can look at a day guide for any day. Why not look up your birthday to see which holidays you share it with?
Observances on December 15th 2025
Public Holidays on December 15th 2025
Kingdom Day
Commemorates the signing of the Charter of the Kingdom of the Netherlands by Queen Juliana on 15 December 1954.
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