ISO week reference

Week 1 2028: January 3–9, 2028

Exact Monday-to-Sunday dates for 2028-W01. Use this week as a calendar reference, open it in the planner, or view it in the full 2028 ISO calendar.

Plan This Week Open 2028 Calendar

Week1

ISO year2028

Weekdays5

QuarterQ1

ISO reference2028-W01

StartsJan20281, Jan 3

Endsth4745651, Jan 9

Length7 days

Exact dates

Dates in week 1

ISO weeks run Monday through Sunday.

MonJan 32028

TueJan 42028

WedJan 52028

ThuJan 62028

FriJan 72028

SatJan 82028

SunJan 92028

Use this week

Turn these dates into a plan

Open a private weekly planner already set to January 3–9, 2028, then add priorities, deadlines, meetings and hourly work blocks.

Open Week 1 Planner

Year calendarAll 52 ISO weeks in 2028 Quarter viewSee Week 1 inside Q1

PreviousWeek 52, 2027Dec 27–Jan 2 Year calendar2028 ISO week calendarBrowse every week and exact date range NextWeek 2, 2028Jan 10–Jan 16