ISO week
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Day of year
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Days left in year
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Year progress
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Read the ISO week
The page shows the current ISO week number alongside date context so you can quickly reference week-based schedules, reports, sprints, or calendars.
How ISO weeks work
ISO week numbering starts weeks on Monday, and week 1 is the week containing the year’s first Thursday. That means the first days of January can belong to the previous ISO year.
Frequently asked questions
What week number is shown?
The page shows the ISO week number for the current date.
What else does the page show?
It also shows day of year, days left in the year, and year progress.
Why is week number useful?
Week numbers are useful for planning, reporting, operations, school schedules, and business calendars.