Week Calendar
Browse any week, see holidays by country, and convert dates to week numbers - free online week calendar.
GClocks · ISO week
Week
Week 34, 2026
2026-08-17 - 2026-08-23
ISO 2026
5 of 7 days elapsed
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Highlighted band is the week you are viewing. Tap a day to jump.
Date → week
Week → dates
Week calendar
Plan by ISO week - holidays, daylight, and date converters in one place
Open the current ISO week instantly, scrub any week number for 2020-2035, highlight today and weekends, compare two countries, check sunrise and sunset near the capital, and convert any date to its week (or a week back to dates) - all on one stable page.
How it works
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01
Land on this week
The page opens on the current ISO week. Use previous/next, the scrubber, or pick a week number and year to move around - keyboard ← → and T work too.
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02
Read the week strip
Seven day cards show weekdays, holidays, and daylight length. Open any day for sun times and holiday details, or download holidays as an .ics file.
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03
Convert & compare
Use Date → week / Week → dates under the month grid, compare a second country, or jump to the same week number in adjacent years.
Why use an ISO week calendar online?
Teams, schools, and shipping often plan by week number - not by month alone. A dedicated week view makes it obvious which Monday-Sunday block you are in, which holidays fall inside it, and how long the days are, without hunting through a full-year grid or opening a separate page for every week.
What you can do with this week calendar
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ISO week numbers
Navigate by ISO week and week-year (Monday start), matching how many teams and ERP systems plan work.
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Country holidays
Highlight public holidays and observances for one country - or compare two side by side.
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Sunrise & day length
See approximate sun times and daylight length for each day near the selected country’s capital.
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Date ↔ week tools
Convert any date to its ISO week, or expand a week number into Mon-Sun dates.
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Export .ics
Download this week’s holidays as a calendar file you can import into Google Calendar, Outlook, or Apple Calendar.
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Shareable week link
Optional #y=&w= hash for sharing a week while the canonical URL stays calendar-week-today.
Frequently asked questions
ISO weeks start on Monday. Week 1 is the week that contains the year’s first Thursday. Near New Year the ISO week-year can differ from the calendar year (for example 30 Dec may fall in week 1 of the next ISO year).
Use the Date → week tool under the month calendar: pick a date, tap Go to highlight that week, or Detail to open the day panel. You can also tap the date on the month grid.
Indexing thousands of week-by-year pages creates thin duplicates. This page stays on one canonical URL (calendar-week-today). You can still share a specific week with a hash such as #y=2026&w=36.
They follow our country packs and may not cover every local jurisdiction, state, or company calendar. Always confirm official sources for legal, payroll, or travel decisions.
Yes. Tap Compare, choose a second country, and both holiday sets appear on the week strip and holiday list. The compare country is stored in the URL hash (#c2=) so you can share the view.
Use Print for a clean week sheet, or Download holidays (.ics) to import public holidays into your calendar app. Copy week link shares the current week hash.
Yes. It is free to use in the browser with no account or sign-up required.