ISO week reference

Week 51 1980: December 15–21, 1980

Exact Monday-to-Sunday dates for 1980-W51. Use this week as a calendar reference, open it in the planner, or view it in the full 1980 ISO calendar.

Plan This Week Open 1980 Calendar

Week51

ISO year1980

Weekdays5

QuarterQ4

ISO reference1980-W51

StartsDec198012, Dec 15

Endsst29332512, Dec 21

Length7 days

Exact dates

Dates in week 51

ISO weeks run Monday through Sunday.

MonDec 151980

TueDec 161980

WedDec 171980

ThuDec 181980

FriDec 191980

SatDec 201980

SunDec 211980

Use this week

Turn these dates into a plan

Open a private weekly planner already set to December 15–21, 1980, then add priorities, deadlines, meetings and hourly work blocks.

Open Week 51 Planner

Year calendarAll 52 ISO weeks in 1980 Quarter viewSee Week 51 inside Q4

PreviousWeek 50, 1980Dec 8–Dec 14 Year calendar1980 ISO week calendarBrowse every week and exact date range NextWeek 52, 1980Dec 22–Dec 28