What Day: December 15
Find the day of the week for any date of the year.
December 15 this year (2026) falls on a Tuesday. It's day 349 of the year, with 16 days left afterward, sits in Q4 (Winter), and falls under the zodiac sign Sagittarius in Western astrology. Because of how leap years shift the calendar, a date's day-of-week doesn't repeat on a fixed yearly schedule. December 15 will next fall on a Tuesday again in 2037. Within December, this is day 15 of 31, roughly 48% through the month. Overall, that's roughly 96% of the way through the year.
As of October 1, 2026, 12:19 PM (America/New York).
A Decade Ago
December 15, 2016 fell on a Thursday, a useful reference point if you're comparing how a recurring event has shifted across the week over the years.
Half a Year Away
Roughly six months from December 15 is June 15, which falls in summer and lands on a Monday this year.
Nearby Dates
Check the day of the week for the date just before or after December 15 using the links below.