Science Atlas

How We Know What We Know
The Calendar

Tuesday 2 April 2024

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

Already Underway

Feast / celebration
The fifty days from Easter Sunday to Pentecost, kept as a single festal season
Day 3 of 50
Fast / abstinence
The whole of Ramadan, the ninth month
Day 24 of 29
Tabular reckoning, and stored as twenty-nine days so the month can never be reported as running into Eid al-Fitr. The month is twenty-nine or thirty days and begins on a sighted crescent in most communities.

The Week Ahead

Sunday 7 AprilDivine Mercy Sunday
Tuesday 9 AprilEid al-Fitr

This Week In Science History

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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.