366
It's the same as our calendar. he average number of days in a year according to the Julian calendar is 365.25 days long. It closely resembles our calendar. So to answer your question, February.
February has the least number of days due to its historical development in the Roman calendar. Originally, the Roman calendar consisted of 10 months, with February being added later as the 12th month. To synchronize the lunar year with the solar year, February was allocated fewer days, resulting in its current length of 28 days, or 29 in a leap year. This design has persisted through subsequent calendar reforms, including the Julian and Gregorian calendars.
A calendar is a list of days of the year. There are 365 days in a normal year so a normal calendar has 365 days. In a leap year, which occurs every 4 years, there is an extra day added so there are 366 days. That extra day would fall on the 28th of February
February is the shortest month with only 28 days, 29 if it happens to be a leap year.
February has 28 days due to its historical origins in the Roman calendar, which initially had ten months and was later adjusted to include January and February. As the calendar evolved, February was assigned 28 days to fit the lunar cycle while the other months were adjusted to have either 30 or 31 days to reach a total of 365 days in a year. Leap years, which add an extra day to February, were introduced to correct for the discrepancy between the calendar year and the solar year. This unique structure has remained throughout centuries of calendar reform.
The last time February had 30 days was in the year 1712. This anomaly occurred in Sweden when they transitioned from the Julian to the Gregorian calendar. In order to catch up with the rest of Europe, Sweden decided to add an extra day in February that year. Since then, February has consistently had 28 or 29 days in leap years.
It was a political, religious and superstitious decision made roughly 2700 years ago by the Roman King Numa Pompilius. Up to that point the Romans had a ten-month calendar with 304 days, and approximately 61 winter days (between December and March) that were not assigned to any month. Numa created a new twelve-month calendar with 355 days by adding January (29 days) and February (28 days). In general, February has contained 28 days ever since. Interestingly, February's 28 days were the second month of the Roman civil calendar but the last (twelfth) month of their religious calendar.
The Julian calendar has the same month names, the same year numbering, and the same number of days per month as the Gregorian calendar. Aside from making New Year's Day the same around the world (1 January), the only difference between the calendars is that in any 400-year period the Gregorian calendar has three fewer days than the Julian calendar. In the 400-year period that began on 1 January 2001, the three days that are part of the Julian calendar but not part of the Gregorian calendar are 29 February 2100, 29 February 2200 and 29 February 2300. The Julian calendar accumulates one day of error every 128 years. The Gregorian calendar accumulates one day of error every 3200 years.
365 Days are in 1 year and 366 Days are every 4 years in the fourth year. Explanation : Teorically, there are 365,25 days in a year. The next year is same, but, if 365,25 is multiplied by two, the result is 365,50 and if multiplied it by four equals 366,00 days. It means, if the number of the year (Ex : 2012) can be divided by 4, it means that year is called leap year. If you wan't proof, divide this year by four = 2012 divided by 4 = 503 so this year is leap year. Another proof ? See February calendar. Usually, the month of February has 28 days. Every four years, in the fourth year (it's now too), February has 29 days. Don't search for February with 29 days. See this year's (2012) February calendar in the computer, internet, board calendar, or wall calendar. It has 29 days. It means one day added in February (29th day) and the total day is 366 every four years in the fourth year.
It takes about 365.2422 days for Earth to orbit the sun, but the number of days in a calendar year is always a whole number. In the Gregorian calendar, each regular year has 365 days and each leap year has 366 days. There are 97 leap years in every 400-year period. That makes the average length of a Gregorian calendar year 365.2425 days.
No, there can't be a February 30th in the Western calendar. February is the shortest month of the year, with 28 days ... most of the time. But every four years, it gets a 29th day. That happens in a leap year, when the Western calendar counts 366 days instead of the usual 365.
A leap year is a year containing one extra day in order to keep the calendar year synchronized with the astronomical or seasonal year. For example, in the Gregorian calendar (common calendar), February in a leap year has 29 days instead of the usual 28, so the year lasts 366 days instead of the usual 365.