Mark Pennell sits at the helm of his time machine.Mark's Almanac is a 90-second time travel that highlights the world's history from the very serious to the sometimes sublime.
Mark's Almanac for October 27, 2021
It was on this date in 312 that Constantine had a vision of a cross from heaven. He became the first Roman emperor to adhere to Christianity. And it was on this date in 1925 that Fred Waller patented water skis.