Week 49 of 2025

December 1, 2025 (Monday) to December 7, 2025 (Sunday)

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ISO Week Number
Week 49
2025 · Week 49 of 52 total weeks

What dates are in Week 49 of 2025?

Week 49 of 2025 runs from December 1, 2025 (Monday) to December 7, 2025 (Sunday). This is the 49th week of the year according to the ISO 8601 standard, in which weeks start on Monday.

Mon
Dec 1
Day 335
Tue
Dec 2
Day 336
Wed
Dec 3
Day 337
Thu
Dec 4
Day 338
Fri
Dec 5
Day 339
Sat
Dec 6
Day 340
Sun
Dec 7
Day 341
Starts December 1, 2025 Monday · Day 335
Ends December 7, 2025 Sunday · Day 341
Duration 7 days 2025 · 52-week year

📅 Nearby weeks in 2025

Week 47Week 48Week 49Week 50Week 51

📋 All 52 weeks in 2025

12345·678910·1112131415·1617181920·2122232425·2627282930·3132333435·3637383940·4142434445·4647484950·5152

📆 Week 49 in other years

Week 49 · 2024Week 49 · 2026

🔧 Related tools

Week Number Calculator Date to Week 2025 Full Calendar

❓ Related questions about Week 49 of 2025

What day of the week is Dec 1?

Dec 1 is a Monday. It is the first day of Week 49 of 2025.

What day of the week is Dec 7?

Dec 7 is a Sunday. It is the last day of Week 49 of 2025.

What is the ISO week number for Dec 1?

Dec 1 is in Week 49 of 2025 according to ISO 8601.

What is the ISO week number for Dec 7?

Dec 7 is in Week 49 of 2025 according to ISO 8601.

❓ Frequently asked questions about Week 49 of 2025

What dates are in Week 49 of 2025?

Week 49 of 2025 runs from December 1, 2025 to December 7, 2025.

Which day of the year does Week 49 start on?

Week 49 of 2025 starts on December 1, 2025, the 335th day of 2025.

Does Week 49 of 2025 fall entirely within 2025?

Yes, all 7 days of Week 49 of 2025 fall within 2025.

How many weeks are in 2025?

2025 has 52 weeks according to ISO 8601.