Week 2 of 2026 runs January 5 to January 11
ISO week 2 of 2026 begins on Monday, January 5, 2026 and ends on Sunday, January 11, 2026. It has already passed; the current week is 39. The week covers January only.
What dates are in week 2?
| Weekday | Date | Day of year | Notes |
|---|---|---|---|
| Monday | January 5, 2026 | 5 | |
| Tuesday | January 6, 2026 | 6 | Epiphany |
| Wednesday | January 7, 2026 | 7 | |
| Thursday | January 8, 2026 | 8 | |
| Friday | January 9, 2026 | 9 | |
| Saturday | January 10, 2026 | 10 | |
| Sunday | January 11, 2026 | 11 |
Week 2 of 2026 contains Epiphany on January 6. The seven dates always run Monday through Sunday, which is the part of ISO 8601 that most often catches people out: a week that starts on Sunday is a different convention and gives a different number.
How ISO week 2 is worked out
ISO 8601 fixes week one as the week containing the first Thursday of January, which is the same as saying the week containing 4 January, or the week holding the majority of its days in the new year. Counting forward from there, week 2 is the 2nd Monday-to-Sunday block of 2026, which lands on January 5. All seven dates sit inside 2026, so the ISO year and the calendar year agree for this week.
When is week 2 in other years?
| Year | Monday | Sunday | Weeks in year |
|---|---|---|---|
| 2026 | January 5 | January 11 | 53 |
| 2027 | January 11 | January 17 | 52 |
| 2028 | January 10 | January 16 | 52 |
| 2029 | January 8 | January 14 | 52 |
| 2030 | January 7 | January 13 | 52 |
Week 2 shifts by a day or two each year because a year is 52 weeks plus one or two days, so the Monday that opens it moves from January 5 in 2026 to January 11 in 2027.
How far away is week 2?
Today is Wednesday, September 23, 2026, which sits in ISO week 39 of 2026. Week 2 of 2026 closed 255 days ago. The same week number in the following year is listed in the table above.
Questions
- What dates are in week 2 of 2026?
- Monday January 5, 2026 through Sunday January 11, 2026.
- What week is it now?
- ISO week 39 of 2026. Today is Wednesday, September 23, 2026.
- How many weeks does 2026 have?
- 53. The 2026 week count page explains the rule.
- Do ISO weeks start on Monday or Sunday?
- Monday. A Sunday-first week is a different convention and can give a different week number for the same date.
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