Today / Week number

Which week is it?

It is week 20

« Week 20 » / 2026

11.5.Monday
12.5.Tuesday
13.5.Wednesday
14.5.Thursday
15.5.Friday
16.5.Saturday
17.5.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
11.5.2026Monday
12.5.2026Tuesday

International Nurses Day

13.5.2026Wednesday
14.5.2026Thursday
15.5.2026Friday

International Day of Families

16.5.2026Saturday

International Day of Living Together in Peace
International Day of Light
International Day of the Boy Child

17.5.2026Sunday

World Telecommunication and Information Society Day
International Day Against Homophobia, Biphobia and Transphobia