Culture calendar
December 15 in 2026
December 15 is day 349 of 365 and falls in ISO week 51.
15
December · Tuesday
Day of year349
ISO week51
Days after16
Source & method: Calendar facts are calculated locally. Historical events and birthdays are intentionally omitted until an editorial source workflow is connected.
About this calendar
A clearer way to see on this day.
A date’s place in the year, with carefully sourced context.
Read our data and calculation methods for coverage and accuracy limits. If a date or result looks wrong, report a calendar error.
Good to know
Where are the historical facts?
MixCalendar only publishes historical facts after editorial review with traceable sources. Phase 1 currently provides verified calendar facts.
Does this page change each year?
Weekdays, week numbers, and day counts are calculated for the current year.
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