Calendar Week 2025 Now Live. All calendar weeks in the year 2025 (iso 8601) calendar weeks 2024 | calendar weeks 2026. All weeks are starting on monday and ending on sunday.
The following table shows all iso calendar weeks 2025 from 1 to 53, with their start date beginning on monday and their end date falling on sunday. The first calendar week of 2025 starts on monday, december 30, 2024 and ends on sunday, january 5, 2025.