NONES (day of the half moon)
The first day of a month in the Roman calendar.
July 25 on the Roman Calendar and March 9 on the Greek Calendar.
Constantine
Our Calendar is the Gregorian Calendar. It is named after Pope Gregory XIII who made some minor modifications to the Julian calendar, the calendar created by Julius Caesar. Therefore, we have inherited a sightly modified Roman Calendar.
Her day is February, 20th in the French Roman Catholic calendar.
the roman calendar was made by Julius Caesar.
the Roman calendar
The feast of Philip the Apostle is May 3rd on the Roman Calendar and November 14 onn the Greek Calendar.
On the Roman calendar, December 26 is the feast day of Saint Stephen the First Martyr.
There was an old Germanic calendar, but it was different to the Roman calendar, which is now used. The Germanic calendar no longer is used.
The months of January and February were added to the Roman calendar.
The difference is the accuracy of mathematical computation of the length of the day, in essence. The Roman calendar was fairly accurate (considering the computation tools of the time, quite accurate), but over a period of many years, it was off by a period of (then) ten days. The Gregorian calendar proposal used more precise mathematics, and deduced that the calendar had lost ten days since the calendar of Rome was established. The calendar was jumped forward ten days (it's a long story). The current (Gregorian) calendar is accurate to about one day every several thousand years.