890
The earliest recorded in ancient history calendar was the "Egyptian calendar" around 4236 B.C.E. They devised a 365-day calendar basing on the moon's cycles or what is called the solar calendar.
SOFIE
The ancient Egyptian calendar that was created about 4000 BCE consisted of 12 months of 30 days each. The Egyptian year had 360 days. This was later changed to add 5 additional days at the end of the year, resulting in a 365 day year.
30
30
The earliest Egyptian calendar was based on the moon's cycles, but the lunar calendar failed to predict a critical event in their lives: the annual flooding of the Nile river. The Egyptians soon noticed that the first day the "Dog Star," which we call Sirius, in Canis Major was visible right before sunrise was special. The Egyptians were probably the first to adopt a mainly solar calendar. This so-called 'heliacal rising' always preceded the flood by a few days. Based on this knowledge, they devised a 365-daycalendar that seems to have begun in 4236 B.C.E., the earliest recorded year in history.
December has 31 days in the Gregorian calendar, as that is the calendar that we now use.
There are 365 days.how many their are in a regular calendar
There are 366 or 265 days in a sami calendar or year
365 days
365