What Day: May 18
Find the day of the week for any date of the year.
May 18 this year (2026) falls on a Monday. It's day 138 of the year, with 227 days left afterward, sits in Q2 (Spring), and falls under the zodiac sign Taurus 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. May 18 will next fall on a Monday again in 2037. Within May, this is day 18 of 31, roughly 58% through the month. Overall, that's roughly 38% of the way through the year.
As of October 1, 2026, 12:19 PM (America/New York).
A Decade Ago
May 18, 2016 fell on a Wednesday, 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 May 18 is November 18, which falls in fall and lands on a Wednesday this year.