What Day: September 17
Find the day of the week for any date of the year.
September 17 this year (2026) falls on a Thursday. It's day 260 of the year, with 105 days left afterward, sits in Q3 (Fall), and falls under the zodiac sign Virgo 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. September 17 will next fall on a Thursday again in 2037. Within September, this is day 17 of 30, roughly 57% through the month. Overall, that's roughly 71% of the way through the year.
As of October 1, 2026, 12:19 PM (America/New York).
A Decade Ago
September 17, 2016 fell on a Saturday, 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 September 17 is March 17, which falls in spring and lands on a Tuesday this year.
Nearby Dates
Check the day of the week for the date just before or after September 17 using the links below.