Heather, the chair of medieval history at King's College London, is the author of Christendom: The Triumph of Religion, AD 300-1300 For the first millennium of Christianity’s existence, western ...

Drawing of the bottom section of De Dondi’s astronomical clock. Giovanni de Dondi. These weren’t the accurate clocks we see today – they probably kept time to within 15-30 minutes a day.

Now that we’re done celebrating Presidents Day, and by that I mean enjoying a day off, let’s consider some of George Washington’s contributions. Father of our country, leader of t… ...

An oral history with pictures, “Once Upon a Time in Northern Ireland” (airing on PBS, Monday through Wednesday) is a five-part journey through the three-decade political-sectarian conflict ...

For permanent daylight saving time to become a reality, the Sunshine Protection Act will need to pass through the House of Representatives and be signed into law by President Joe Biden. Whether or not ...

This weekend, those clocks need to get turned back, as the end of daylight saving time is almost here. Daylight saving time will end on Sunday, Nov. 3, 2024 at 2 a.m. The annual task means the ...