How many days are there in February?

February, February is the second month of the solar year, with 28 days in a normal year and 29 days in a leap year. There have been three times in history, and there are 30 days in February. In the northern hemisphere, February is the third month of winter. This month's solar terms are: beginning of spring, it rains.

The nicknames of February are Li Yue, Xingyue, Huayue, Zhongyue, Zhongchun, John, Yueru, Zhongyang, Zhu Qiu, Sisi, Zhonghe, Huachao, Jia Zhong, Dazhuang and Uzuki.

February 29(th)

The time interval of the earth's revolution around the sun is about 365.2422 days, while the calendar we adopt is only 365 days a year, that is to say, there will be nearly one more day in the calendar every four years. In order to solve this remainder, an extra leap day-February 29th is added every four years.

So generally speaking, if a person is born on February 29th in a leap year, then in other years other than leap year, he will take February 28th or March 1 as his birthday.

To put it simply, our daily time should be 23 hours, 56 minutes and 04 seconds, and the extra 244 seconds a day will be counted as February 29.

February thirtieth

February 30th has appeared in history, which needs to start from the history of the calendar.

In fact, the calendar we use now evolved from julian calendar in ancient Rome. By 46 BC, the calendar was quite chaotic, so Julius Caesar, the ruler of the Roman Empire, decided to reform the calendar and make a new one. This new calendar is called julian calendar. Caesar stipulated in the calendar change order: arrange a leap year every three years, that is to say, there is a leap year every four years; There are 365 days in a normal year and 366 days in a leap year. At that time, the monthly arrangement of 365 days in a normal year was completely in line with our thinking, that is, according to big month, small month, big month, small month, small month, big month, small month and small month, it happened to be six big months and six small months. Of course, the big month is 3 1 day and the small month is 30 days, but it is not difficult to find that there are 366 days in this1February * *, one day more than the actual 365 days. So if you reduce one day a month, you can see that the calendar has reduced this day in February.

When Pope Gregory I discovered that one more day every four years was too much. The most correct way is to jump once every four years, not once every hundred years, such as 2100,2200, but once every 400 years, such as 2000,2400.

In other words, the chances of being born on February 30th are the least.