What is on this calendar?

Public holidays in the US and 24 other countries; religious holy days across Christianity (Western and Orthodox), Judaism, Islam, Hinduism, Buddhism, Sikhism, Jainism, the Baha’i Faith, Zoroastrianism and pagan traditions; moon phases, eclipses, solstices and meteor showers; sports season openers, finals and majors; Minnesota hunting and fishing openers; elections and summits; Fed meetings and big-tech earnings; awards and festivals; UN days and heritage months; and round-number anniversaries and birthdays.

How are the dates worked out?

Anything that follows a rule is computed exactly: the sky with Astronomy Engine, Easter by the computus, Jewish dates with Hebcal, Islamic dates from the Umm al-Qura calendar, Hindu and Sikh festivals from the lunisolar calendar, US observances from statute. Everything else comes from the organizer or a checked public source, and every event links to its source.

Why might a religious date differ from my community?

Islamic months start with the sighting of the new moon, so local dates can differ by a day from the Umm al-Qura calendar used here. Hindu festivals follow regional almanacs. Those dates are marked tentative.

Can I add it to my calendar app?

Yes. Every category and subcategory has an iCalendar feed on the Feeds page, and any filter can become a feed (for example /ics?cat=sports.nfl,sky). Every event page has an Add to calendar menu.

How often is it updated?

Every week. Computed calendars extend automatically, schedules are re-read from their sources, and every moved or cancelled date is kept on the Changes page.