Week 43 of 2026

October 19, 2026 (Monday) to October 25, 2026 (Sunday)

← Week 42 Week 43 of 2026 Week 44 →
ISO Week Number
Week 43
2026 · Week 43 of 53 total weeks

What dates are in Week 43 of 2026?

Week 43 of 2026 runs from October 19, 2026 (Monday) to October 25, 2026 (Sunday). This is the 43th week of the year according to the ISO 8601 standard, in which weeks start on Monday.

Mon
Oct 19
Day 292
Tue
Oct 20
Day 293
Wed
Oct 21
Day 294
Thu
Oct 22
Day 295
Fri
Oct 23
Day 296
Sat
Oct 24
Day 297
Sun
Oct 25
Day 298
Starts October 19, 2026 Monday · Day 292
Ends October 25, 2026 Sunday · Day 298
Duration 7 days 2026 · 53-week year

📅 Nearby weeks in 2026

Week 41Week 42Week 43Week 44Week 45

📋 All 53 weeks in 2026

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

📆 Week 43 in other years

Week 43 · 2025Week 43 · 2027

🔧 Related tools

Week Number Calculator Date to Week 2026 Full Calendar

❓ Related questions about Week 43 of 2026

What day of the week is Oct 19?

Oct 19 is a Monday. It is the first day of Week 43 of 2026.

What day of the week is Oct 25?

Oct 25 is a Sunday. It is the last day of Week 43 of 2026.

What is the ISO week number for Oct 19?

Oct 19 is in Week 43 of 2026 according to ISO 8601.

What is the ISO week number for Oct 25?

Oct 25 is in Week 43 of 2026 according to ISO 8601.

❓ Frequently asked questions about Week 43 of 2026

What dates are in Week 43 of 2026?

Week 43 of 2026 runs from October 19, 2026 to October 25, 2026.

Which day of the year does Week 43 start on?

Week 43 of 2026 starts on October 19, 2026, the 292th day of 2026.

Does Week 43 of 2026 fall entirely within 2026?

Yes, all 7 days of Week 43 of 2026 fall within 2026.

How many weeks are in 2026?

2026 has 53 weeks according to ISO 8601.