May 13–19, 1901
MonTueWedThuFriSatSun
Week 1 contains the first Thursday of the year.ISO guide →Date → week number
May 15, 1901: What week number?
Wednesday, May 15, 1901ISO Week 201901-W20
ISO Week 20 runs from May 13, 1901 to May 19, 1901.
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 12–18, 1901
SunMonTueWedThuFriSat
Week 1 contains January 1.US-style guide →ISO weekWeek 20
US-style weekWeek 20
WeekdayWednesday
QuarterQ2
Day of year135 / 365
ISO weekday3 / 7
May 1901
Date context
Wednesday, May 15, 1901 is day 135 of 1901 and belongs to ISO Week 20.
The entire ISO Week 20 falls within May.
Distance from today
How long ago was May 15, 1901?
Days45800
Full weeks6542
Remaining days6
May 15, 1901 is 45800 days before today, equal to 6542 full weeks and 6 days.
International observances
Official observances on this date
International Day of Families
International observance listed by UN.
Official source →