ISO week reference

Week 1 2021: January 4–10, 2021

Exact Monday-to-Sunday dates for 2021-W01. Use this week as a calendar reference, open it in the planner, or view it in the full 2021 ISO calendar.

Plan This Week Open 2021 Calendar

Week1

ISO year2021

Weekdays5

QuarterQ1

ISO reference2021-W01

StartsJan20211, Jan 4

Endsth9837731, Jan 10

Length7 days

Exact dates

Dates in week 1

ISO weeks run Monday through Sunday.

MonJan 42021

TueJan 52021

WedJan 62021

ThuJan 72021

FriJan 82021

SatJan 92021

SunJan 102021

Use this week

Turn these dates into a plan

Open a private weekly planner already set to January 4–10, 2021, then add priorities, deadlines, meetings and hourly work blocks.

Open Week 1 Planner

Year calendarAll 52 ISO weeks in 2021 Quarter viewSee Week 1 inside Q1

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