ISO week reference

Week 42 2027: October 18–24, 2027

Exact Monday-to-Sunday dates for 2027-W42. Use this week as a calendar reference, open it in the planner, or view it in the full 2027 ISO calendar.

Plan This Week Open 2027 Calendar

Week42

ISO year2027

Weekdays5

QuarterQ4

ISO reference2027-W42

StartsOct202710, Oct 18

Endsth03612510, Oct 24

Length7 days

Exact dates

Dates in week 42

ISO weeks run Monday through Sunday.

MonOct 182027

TueOct 192027

WedOct 202027

ThuOct 212027

FriOct 222027

SatOct 232027

SunOct 242027

Use this week

Turn these dates into a plan

Open a private weekly planner already set to October 18–24, 2027, then add priorities, deadlines, meetings and hourly work blocks.

Open Week 42 Planner

Year calendarAll 52 ISO weeks in 2027 Quarter viewSee Week 42 inside Q4

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