Roman calendar was reformed several times, the last three enduring reforms during historical times. The last three reformed Roman calendars are called the "Julian", "Augustan", and "Gregorian"; all had the same number of days in their months. Despite other attempts, the names of the months after the Augustan calendar reform have persisted, and the number of days in each month (except February) have remained constant since before the Julian reform. The Gregorian calendar, like the Roman calendars before it, has twelve months, whose Anglicized names are: