Calendar

About the MES Calendar

• A full-year and month calendar for any year from 1583 to 2500, with today highlighted, the rest of the months and years a click away, and every month and section collapsible.
• Moon phases: new and full moons (and optionally first and last quarters) with the exact time in your time zone, calculated in your browser with Jean Meeus' astronomical algorithms. Turn on Moon phase on every day to see the moon's phase and how much of it is lit, each day. Blue moons (a second full moon in one month) are marked.
• Holidays: public holidays for Canada (federal and the common provincial ones), the USA, the UK, Australia and Vietnam, including the observed day when a holiday falls on a weekend, plus Christian, Jewish and Islamic observances and Lunar New Year. Islamic dates follow the Umm al-Qura calendar and can differ by a day depending on moon sighting.
• Things standard calendars leave out: equinoxes and solstices to the minute, upcoming eclipses, daylight-saving clock changes for your time zone, ISO week numbers, day of the year, days left in the year, long weekends, Friday the 13th, tax deadlines for Canada and the USA, and a built-in days-between / add-days calculator.
• Everything runs in your browser and your choices are remembered on this device only. Share a date with a link such as mes.fm/calendar?y=2027&m=2&d=14. Keys: ← / → change month, T today, M month view, Y year view.