by dates and times == ==
Chat with our AI personalities
30 calendar days is 30 days including weekdays, weekends and holidays.
The Julian calendar is 13 days behind the Gregorian calendar from March 1900 until March 2100.
In the Gregorian Calendar, which is the calendar currently used in every American country, 75.75% of the years have 365 days each, and 24.25% of the years have 366 days each, making the average calendar year 365.2425 days.
365
One was a lunar calendar based on the phases of the moon. Priests used this calendar to determine religious days and lucky days. The other was a solar calendar,based on the movement of the sun. It's similar to the calendar we use today