Week 52 of 2026

December 21, 2026 (Monday) to December 27, 2026 (Sunday)

← Week 51 Week 52 of 2026 Week 53 →
ISO Week Number
Week 52
2026 · Week 52 of 53 total weeks

What dates are in Week 52 of 2026?

Week 52 of 2026 runs from December 21, 2026 (Monday) to December 27, 2026 (Sunday). This is the 52th week of the year according to the ISO 8601 standard, in which weeks start on Monday.

Mon
Dec 21
Day 355
Tue
Dec 22
Day 356
Wed
Dec 23
Day 357
Thu
Dec 24
Day 358
Fri
Dec 25
Day 359
Sat
Dec 26
Day 360
Sun
Dec 27
Day 361
Starts December 21, 2026 Monday · Day 355
Ends December 27, 2026 Sunday · Day 361
Duration 7 days 2026 · 53-week year

📅 Nearby weeks in 2026

Week 50Week 51Week 52Week 53

📋 All 53 weeks in 2026

12345·678910·1112131415·1617181920·2122232425·2627282930·3132333435·3637383940·4142434445·4647484950·515253

📆 Week 52 in other years

Week 52 · 2025Week 52 · 2027

🔧 Related tools

Week Number Calculator Date to Week 2026 Full Calendar

❓ Related questions about Week 52 of 2026

What day of the week is Dec 21?

Dec 21 is a Monday. It is the first day of Week 52 of 2026.

What day of the week is Dec 27?

Dec 27 is a Sunday. It is the last day of Week 52 of 2026.

What is the ISO week number for Dec 21?

Dec 21 is in Week 52 of 2026 according to ISO 8601.

What is the ISO week number for Dec 27?

Dec 27 is in Week 52 of 2026 according to ISO 8601.

❓ Frequently asked questions about Week 52 of 2026

What dates are in Week 52 of 2026?

Week 52 of 2026 runs from December 21, 2026 to December 27, 2026.

Which day of the year does Week 52 start on?

Week 52 of 2026 starts on December 21, 2026, the 355th day of 2026.

Does Week 52 of 2026 fall entirely within 2026?

Yes, all 7 days of Week 52 of 2026 fall within 2026.

How many weeks are in 2026?

2026 has 53 weeks according to ISO 8601.