Week Numbers In 2025 With Holidays. 2025 begins on 01/01/2025 and ends on 31/12/2025. The first calendar week in 2025 begins on monday, the 30/12/2024 and ends on.

It has 52 weeks and starts on wednesday, january 1st 2025. The year 2025 ends on wednesday, december 31st 2025.