Today / Week number

Which week is it?

It is week 13

« Week 13 » / 2026

23.3.Monday
24.3.Tuesday
25.3.Wednesday
26.3.Thursday
27.3.Friday
28.3.Saturday
29.3.Sunday

You can search when is the week or what week is on a certain date.

The page tells you which week is currently in progress. The service is also connected to an annual calendar for the current year and currently also for the previous and two following years. The service also lists international and other days for celebration.

How is the weekly number determined?

The week number is determined according to the ISO 8601 standard. All years have either 52 or 53 weeks. The first week of the year is the period of the week starting from Monday, of which more than half (ie at least four) of the days fall into that year. The first week of the year can therefore start on the side of the previous year. Similarly, the last week of the year can go into the next year.

What are week numbers needed for?

Week numbering is a way of indicating the time of year. Usually, the work is rhythmic according to the days of the week; the work week starts on Monday and the weekend is celebrated on Saturday and Sunday.

International Days in week

DayDay of weekInternational Days
23.3.2026Monday

World Meteorological Day

24.3.2026Tuesday

World Tuberculosis Day
International Day for the Right to the Truth concerning Gross Human Rights Violations and for the Dignity of Victims

25.3.2026Wednesday

International Day of Remembrance of the Victims of Slavery and the Transatlantic Slave Trade
International Day of Solidarity with Detained and Missing Staff Members

26.3.2026Thursday

International Girls in ICT Day

27.3.2026Friday

World Theatre Day

28.3.2026Saturday
29.3.2026Sunday