EN

     

    When is that day?

    Calendars, holidays, week numbers, moon phases and countdowns – everything about dates, free and instant.

      Today–Week number–Day of the year–Moon phase–

      Calendars

      Calendar 2026Calendar 2027Calendar 2028Calendar 2029Calendar 2030Calendar 2031

      October 2026 →

      Holidays

      United States2027Germany2027Austria2027Switzerland2027United Kingdom2027France2027Spain2027Italy2027Türkiye2027

      All countries →

      Countdowns

      🎄Christmas 🥂New Year 🐣Easter 🎃Halloween 💐Mother’s Day 💘Valentine’s Day ☀️Summer 🛋️the Weekend 

      All countdowns →

      Calculators & timers

      📆 What day is it today?⏳ Create your own countdown⏱️ Online timer⏲️ Stopwatch↔️ Days between dates➕ Add or subtract days💼 Business days calculator🗓️ Day of the week calculator🎂 Birthday countdown#️⃣ Week number calculator🔢 Day of the year🔄 Calendar converter

      Week number & Moon phase

      Week numberWeek numbers 2026Week numbers 2027Week numbers 2028Moon phaseMoon calendar 2026Moon calendar 2027Moon calendar 2028

      Calendar systems of the world

      ☪️ Islamic calendar✡️ Hebrew calendar🐉 Chinese calendar🇰🇷 Korean calendar🗾 Japanese calendar🌸 Persian calendar☸️ Buddhist calendar🪷 Indian national calendar🇪🇹 Ethiopian calendar⛪ Coptic calendar🇹🇼 Minguo calendar (Taiwan)🏛️ Julian calendar

      Frequently asked questions

      What can I find on WhenIsThatDay?

      Printable calendars, public holidays for more than 100 countries and their regions, week numbers, moon calendars, live countdowns, date calculators and calendar converters.

      What week number is it today?

      The current week number is shown at the top – calculated live from your device’s date according to ISO 8601.

      Is it free?

      Yes, all calendars, calculators and countdowns are free to use without sign-up.