ISO Week Number for Monday, December 1, 2025
ISO 8601 calendar week analysis & DevOven graphic week breakdown for 2025-12-01.
Result & Live Analytics
Calculated Result
ISO Week 49
✨ Quarter Q4 • Day 335 of Year (2025-12-01 to 2025-12-07)
Year Progress94%
Week 49
ISO Week Number
Q4
Quarter
Day 335
Day of Year
3 Weeks
Weeks Remaining
Breakdown & Analysis
The date Monday, December 1, 2025 (2025-12-01) is officially ISO Week Number 49 of ISO Year 2025. This week begins on Monday, 2025-12-01 and concludes on Sunday, 2025-12-07.
ISO Year 2025 contains 52 total weeks. Week 49 falls in Quarter Q4 and represents Day 335 of the year (94% annual completion), leaving 3 weeks remaining.
Frequently Asked Questions
What ISO week number is 2025-12-01?
2025-12-01 falls in ISO Week Number 49 of ISO Year 2025.
What are the start and end dates for Week 49 (2025)?
ISO Week 49 begins on Monday, 2025-12-01 and ends on Sunday, 2025-12-07.
What is the day of year and quarter for 2025-12-01?
2025-12-01 is Day 335 of the year and falls in Quarter Q4.
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