Episode 139: What’s the Deal with the Gregorian Calendar?

Sources

• In Our Time: The Calendar https://www.bbc.co.uk/programmes/p00548m9

• Steel, Duncan (2000). Marking Time: The Epic Quest to Invent the Perfect Calendar.

• Richards, E. G. (1998). Mapping Time: The Calendar and its History. Oxford University Press. 

• Poole, Robert. “‘Give Us Our Eleven Days!’: Calendar Reform in Eighteenth-Century England.” Past & Present, no. 149, 1995, pp. 95–139 

• Papal Bull of 1582 https://en.wikisource.org/wiki/Translation:Inter_gravissimas