May 11–17, 2026
MonTueWedThuFriSatSun
Week 1 contains the first Thursday of the year.ISO guide →Date → week number
May 16, 2026: What week number?
Saturday, May 16, 2026ISO Week 202026-W20
ISO Week 20 runs from May 11, 2026 to May 17, 2026.
ISO vs US-style week numbers
The same date can have different week numbers
ISO weeks start on Monday. The simplified US-style system starts on Sunday and counts the week containing January 1 as Week 1.
May 10–16, 2026
SunMonTueWedThuFriSat
Week 1 contains January 1.US-style guide →ISO weekWeek 20
US-style weekWeek 20
WeekdaySaturday
QuarterQ2
Day of year136 / 365
ISO weekday6 / 7
May 2026
Date context
Saturday, May 16, 2026 is day 136 of 2026 and belongs to ISO Week 20.
The entire ISO Week 20 falls within May.
Distance from today
How long ago was May 16, 2026?
Days143
Full weeks20
Remaining days3
May 16, 2026 is 143 days before today, equal to 20 full weeks and 3 days.