Assertion: gregorian calendar | /r/AtLocation | use
Facets:
Source sentences:
text: During the Middle Ages in western Europe, while the Julian calendar was still in use, authorities moved New Year's Day, depending upon locale, to one of several other days, including March 1, March 25, Easter, September 1, and December 25.
text: The proleptic Julian calendar uses Anno Domini throughout, including for dates of Late Antiquity when the Julian calendar was in use but Anno Domini wasn't, and for times predating the introduction of the Julian calendar.
text: And to make his new calendar — the Gregorian calendar, which is still in use today — more accurate, Pope Gregory established the rule that years ending in double zeros, and not divisible by 400, would not count as leap years.
text: The Julian calendar that had been in use until then was slightly inaccurate, causing the vernal equinox to move backwards in the calendar year.