Reading the calendar
This calendar shows any month or year, with public holidays for over 100 countries layered on top. Switch the country to see its holidays highlighted, jump to any year, and tap a date for details. It’s built for planning across borders — when your team, family, or trip spans several countries, you can see everyone’s days off in one view.
Week numbers and the ISO week
Each week is labelled with its ISO 8601 week number. Under that standard, week 1 is the week containing the year’s first Thursday, and weeks run Monday to Sunday. Project managers, payroll teams, and much of Europe schedule by week number (“let’s ship in week 38”), so it’s there whenever you need it.
Moon phases
The calendar marks the four principal moon phases — new, first quarter, full, and last quarter — computed astronomically for each date. Handy for photographers, gardeners, anglers, and anyone who just likes knowing when the next full moon falls.
Frequently asked questions
Where do the holidays come from?
From an openly licensed public-holiday dataset (CC-BY 4.0), refreshed each year, covering national public holidays for 100+ countries.
What’s a “day of year”?
The day’s position counting from 1 January — for example, 1 March is day 60 in a leap year. Useful in logistics, science, and some accounting systems.
Do the dates account for leap years?
Yes. February gets its 29th day in leap years, and day-of-year counts adjust automatically.