Week 3 of 2025
January 13 – January 19, 2025
| Monday | January 13, 2025 | Mon · week starts |
| Tuesday | January 14, 2025 | |
| Wednesday | January 15, 2025 | |
| Thursday | January 16, 2025 | |
| Friday | January 17, 2025 | |
| Saturday | January 18, 2025 | |
| Sunday | January 19, 2025 | Sun · week ends |
All weeks of 2025
2025 is an ISO year with 52 weeks.
About ISO week 3 of 2025
ISO 8601 weeks start on Monday and end on Sunday. Week 3 of 2025 begins on Monday, January 13, 2025 and ends on Sunday, January 19, 2025. Week numbering follows the international standard: week 1 of a year is the week containing the first Thursday of January, which is why some calendar dates near January 1st belong to the previous or next ISO year.
The ISO week system is the standard for business reporting across Europe and much of the world. The US convention differs: weeks start on Sunday and week 1 contains January 1st, so US week numbers can be one ahead of or behind ISO numbers near year boundaries.
Frequently asked questions
What dates are in week 3 of 2025?
Week 3 of 2025 spans January 13 – January 19, 2025: Monday January 13 through Sunday January 19.
When is week 3 of 2025?
Week 3 of 2025 started 652 days ago, on Monday, January 13, 2025.
Why does 2025 have 52 weeks?
2025 has the usual 52 ISO weeks. Only years starting on a Thursday (or a Wednesday in a leap year) get a 53rd week.