January 5–11, 2026
MonTueWedThuFriSatSun
Week 1 contains the first Thursday of the year.ISO guide →Date → week number
January 9, 2026: What week number?
Friday, January 9, 2026ISO Week 22026-W02
ISO Week 2 runs from January 5, 2026 to January 11, 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.
January 4–10, 2026
SunMonTueWedThuFriSat
Week 1 contains January 1.US-style guide →ISO weekWeek 2
US-style weekWeek 2
WeekdayFriday
QuarterQ1
Day of year9 / 365
ISO weekday5 / 7
January 2026
Date context
Friday, January 9, 2026 is day 9 of 2026 and belongs to ISO Week 2.
The entire ISO Week 2 falls within January.
Distance from today
How long ago was January 9, 2026?
Days270
Full weeks38
Remaining days4
January 9, 2026 is 270 days before today, equal to 38 full weeks and 4 days.