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The Calendar

Tuesday 27 May 2025

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 38 of 50

The Week Ahead

Thursday 29 MayAscension Day

This Week In Technology and Engineering History

27 MayAdhesive Tape, patented 1930
27 MayBathysphere, patented 1930
27 MayFax, patented 1843
31 MayPropeller, patented 1835
1 JuneGrain Elevator, patented 1843
2 JuneRadio, patented 1896
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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.