ISO week reference

Week 21 1981: May 18–24, 1981

Exact Monday-to-Sunday dates for 1981-W21. Use this week as a calendar reference, open it in the planner, or view it in the full 1981 ISO calendar.

Plan This Week Open 1981 Calendar

Week21

ISO year1981

Weekdays5

QuarterQ2

ISO reference1981-W21

StartsMay19815, May 18

Endsth2225695, May 24

Length7 days

Exact dates

Dates in week 21

ISO weeks run Monday through Sunday.

MonMay 181981

TueMay 191981

WedMay 201981

ThuMay 211981

FriMay 221981

SatMay 231981

SunMay 241981

Use this week

Turn these dates into a plan

Open a private weekly planner already set to May 18–24, 1981, then add priorities, deadlines, meetings and hourly work blocks.

Open Week 21 Planner

Year calendarAll 53 ISO weeks in 1981 Quarter viewSee Week 21 inside Q2

PreviousWeek 20, 1981May 11–May 17 Year calendar1981 ISO week calendarBrowse every week and exact date range NextWeek 22, 1981May 25–May 31