Week 42, 2026

October 12 – October 18, 2026 · 2026-W42 · ~78% through 2026

Week Details

Week number 42
Year 2026
ISO notation 2026-W42
Start date Monday, October 12, 2026
End date Sunday, October 18, 2026
Working days 5 (Mon–Fri)
Year progress 78%

Days in This Week

Mon
Oct 12
Tue
Oct 13
Wed
Oct 14
Thu
Oct 15
Fri
Oct 16
Sat
Oct 17
Sun
Oct 18

Week 42 in Other Years

Year Start End
2027 Oct 18, 2027 Oct 24, 2027

Frequently Asked Questions

What dates are in week 42 of 2026?

Week 42 of 2026 starts on Monday, October 12, 2026 and ends on Sunday, October 18, 2026. It contains 5 working days (Monday–Friday) and a 2-day weekend (Saturday–Sunday).

What is the ISO notation for week 42, 2026?

The ISO 8601 week date notation is 2026-W42. Individual days are written as 2026-W42-1 (Monday) through 2026-W42-7 (Sunday).

How far through 2026 is week 42?

Week 42 begins around day 285 of 365, which is approximately 78% through the year.