“No historical events of any importance occurred in England on September 5th of 1752, and we know that because there was no September 5th…in England…in 1752”
What would be fun would be to just invent a bunch of fake “English historical events” for Sept. 5 1752, and put them up on a website. Then see how long before anyone notices.
When Pope Gregory XIII proposed the calendar change in 1582, he decreed that the day after October 4 would be October 15. The change at the time was only 10 days. St. Teresa of Avila died on the night of Oct. 4/15, 1582. Her feast day is Oct. 15 (Oct. 4 was already that of a major saint—Francis of Assisi). England waited until 1752 because it wasn’t going to follow a decree from the pope. Many Protestant countries also delayed but not as long as England did.
Would be a good thing to work into a reboot of “Back to the Future”.