ISO week 2026-W02

Week 2, 2026

Monday, January 5 – Sunday, January 11, 2026

ISO week 2 of 2026 (2026-W02) runs from Monday, January 5, 2026 to Sunday, January 11, 2026.

This week ended 40 weeks ago. The current week is week 42, 2026.

The 7 days of week 2

Dates in week 2, 2026
Day	Date	Day of year	US week	ISO date
Monday	January 5, 2026	5 of 365	2	2026-W02-1
Tuesday	January 6, 2026	6 of 365	2	2026-W02-2
Wednesday	January 7, 2026	7 of 365	2	2026-W02-3
Thursday	January 8, 2026	8 of 365	2	2026-W02-4
Friday	January 9, 2026	9 of 365	2	2026-W02-5
Saturday	January 10, 2026	10 of 365	2	2026-W02-6
Sunday	January 11, 2026	11 of 365	3	2026-W02-7

Week 2 at a glance

ISO code: 2026-W02 (Monday is 2026-W02-1, Sunday is 2026-W02-7)
Month: January
Quarter: Q1 of 2026
Day of year: Days 5–11 of 365
US week number: Monday–Saturday: US week 2; Sunday: US week 3 (Sunday-start weeks, week 1 contains January 1)
Even or odd: Week 2 is an even week
Weeks left: After this week, 51 ISO weeks remain in 2026 (53 weeks in total)
Year progress: By Sunday, 3% of 2026 has passed

Holidays and key dates

There are no US federal holidays, daylight saving time changes or quarter starts in week 2 of 2026.

Week numbers follow ISO 8601: weeks start on Monday and week 1 contains the first Thursday of the year. US weeks start on Sunday, with week 1 containing January 1.

Questions about week 2, 2026

What are the dates of week 2 in 2026?

Week 2 of 2026 starts on Monday, January 5, 2026 and ends on Sunday, January 11, 2026.

What month is week 2 of 2026?

Week 2 falls in January. By the Thursday rule that ISO 8601 uses for years and quarters, it counts as a January week.

How do I get week 2 of 2026 in Excel or Google Sheets?

=ISOWEEKNUM(DATE(2026,1,5)) returns 2. To go the other way, =DATE(2026,1,4)-WEEKDAY(DATE(2026,1,4),2)+1+(2-1)*7 returns the Monday, January 5, 2026.