Space and Astronomy Atlas

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The Calendar

Monday 31 March 2025

What the atlas records for this date, across the traditions it covers.

The Day BeforeTodayThe Day AfterAll Of March 2025

Already Underway

Lent
Fast / abstinence
The forty days from Ash Wednesday to Holy Thursday, Sundays not counted
Day 27 of 46
Forty days, counted excluding Sundays, which is why the span is forty-six.
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This Week In Space and Astronomy History

31 MarchLuna 10, Launch Date 1966
1 AprilArtemis II, Launch Date 2026
3 AprilSoyuz 7K-TM, Launch Date 1974
4 AprilSoyuz-T, Launch Date 1978
5 AprilPegasus, First Flight Date 1990
6 AprilPioneer 11, Launch Date 1973
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Dates for the Hebrew and Islamic calendars are the tabular reckoning, which is what a printed calendar prints. Communities that begin a month on a sighted crescent may differ by a day, and differ from one another by place.