What Day: March 21
Find the day of the week for any date of the year.
March 21 this year (2026) falls on a Saturday. It's day 80 of the year, with 285 days left afterward, sits in Q1 (Spring), and falls under the zodiac sign Aries 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. March 21 will next fall on a Saturday again in 2037. Within March, this is day 21 of 31, roughly 68% through the month. Overall, that's roughly 22% of the way through the year.
As of October 1, 2026, 12:18 PM (America/New York).
A Decade Ago
March 21, 2016 fell on a Monday, 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 March 21 is September 21, which falls in fall and lands on a Monday this year.