Week 40 of 2027

October 4, 2027 (Monday) to October 10, 2027 (Sunday)

← Week 39 Week 40 of 2027 Week 41 →
ISO Week Number
Week 40
2027 · Week 40 of 52 total weeks

What dates are in Week 40 of 2027?

Week 40 of 2027 runs from October 4, 2027 (Monday) to October 10, 2027 (Sunday). This is the 40th week of the year according to the ISO 8601 standard, in which weeks start on Monday.

Mon
Oct 4
Day 277
Tue
Oct 5
Day 278
Wed
Oct 6
Day 279
Thu
Oct 7
Day 280
Fri
Oct 8
Day 281
Sat
Oct 9
Day 282
Sun
Oct 10
Day 283
Starts October 4, 2027 Monday · Day 277
Ends October 10, 2027 Sunday · Day 283
Duration 7 days 2027 · 52-week year

📅 Nearby weeks in 2027

Week 38Week 39Week 40Week 41Week 42

📋 All 52 weeks in 2027

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

📆 Week 40 in other years

Week 40 · 2026Week 40 · 2028

🔧 Related tools

Week Number Calculator Date to Week 2027 Full Calendar

❓ Related questions about Week 40 of 2027

What day of the week is Oct 4?

Oct 4 is a Monday. It is the first day of Week 40 of 2027.

What day of the week is Oct 10?

Oct 10 is a Sunday. It is the last day of Week 40 of 2027.

What is the ISO week number for Oct 4?

Oct 4 is in Week 40 of 2027 according to ISO 8601.

What is the ISO week number for Oct 10?

Oct 10 is in Week 40 of 2027 according to ISO 8601.

❓ Frequently asked questions about Week 40 of 2027

What dates are in Week 40 of 2027?

Week 40 of 2027 runs from October 4, 2027 to October 10, 2027.

Which day of the year does Week 40 start on?

Week 40 of 2027 starts on October 4, 2027, the 277th day of 2027.

Does Week 40 of 2027 fall entirely within 2027?

Yes, all 7 days of Week 40 of 2027 fall within 2027.

How many weeks are in 2027?

2027 has 52 weeks according to ISO 8601.