December 15 national day 2026
On December 15th, 1 national day falls on this date.
December 15 is a date on the 2026 national-day calendar. TheDayOf currently lists 1 observance for this date: National Cupcake Day. Open any day page for the date, history, and how to celebrate, or browse the rest of December from the month hub.
National
Tuesday, December 15, 2026
National Cupcake Day
Sweeten up on National Cupcake Day! These individual-sized cakes became a cultural phenomenon. From basic vanilla to gourmet flavors…
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