ISO week reference

Week 42 1221: October 18–24, 1221

Exact Monday-to-Sunday dates for 1221-W42. Use this week as a calendar reference, open it in the planner, or view it in the full 1221 ISO calendar.

Plan This Week Open 1221 Calendar

Week42

ISO year1221

Weekdays5

QuarterQ4

ISO reference1221-W42

StartsOct122110, Oct 18

Endsth49636610, Oct 24

Length7 days

Exact dates

Dates in week 42

ISO weeks run Monday through Sunday.

MonOct 181221

TueOct 191221

WedOct 201221

ThuOct 211221

FriOct 221221

SatOct 231221

SunOct 241221

Use this week

Turn these dates into a plan

Open a private weekly planner already set to October 18–24, 1221, then add priorities, deadlines, meetings and hourly work blocks.

Open Week 42 Planner

Year calendarAll 52 ISO weeks in 1221 Quarter viewSee Week 42 inside Q4

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