Traditional Culture Encyclopedia - The 24 Solar Terms - How long did it take from 10: 50 to 1 1: 45?
How long did it take from 10: 50 to 1 1: 45?
The analysis process is as follows:
One hour (60 minutes) from 10: 50 to 1 1: 50, and then five minutes from 1 1: 45 to1:50.
Extended data:
Time unit:
1, year: the year is the time unit in which events related to the earth's revolution around the sun occur repeatedly.
Generally speaking, the length of a year is taken as the time interval from a punctuation mark to the same punctuation mark on the celestial sphere along the ecliptic. Because the selected scale points are different, the definition of year is also different, which usually includes:
(1), perigee year =365.25964 days.
(2), sidereal year = 365.253004 solar day (≈ 10 second 365 at 6: 09).
(3) Tropic year (Bessel year) = 365.245438+099 174 days (≈365 days, 5 hours, 48 minutes and 45.5 seconds).
(4) Nodal year =346.62003 (346 days 14 hours, 52 minutes and 52.9 seconds).
2. Quarter: A year is divided into four parts on average. According to the order of spring, summer, autumn and winter, a year can be divided into four quarters, and each quarter lasts for three months. The first quarter: 65438+1October-March; The second quarter: April-June; Third quarter: July-September; The fourth quarter: 65438+ 10-65438+February.
3. Month: a year is divided into 12 months; In China, the lunar year is 12 months and the leap year is 13 months. The extra month is called leap month.
4. Ten-day: In ancient China, the dry days were repeated every ten days, which was called Ten-day. January can be divided into three days, namely morning, noon and evening.
5. Week: Week, also known as week or worship, is a unit of time created by the ancient Babylonians, and a week is seven days.
6. Waiting: Five days were called "waiting" in ancient times; There are 24 solar terms and 72 seasons in a year.
7. Day: It is the time unit for measuring the rotation of the planet. It is often called heaven in spoken language. A solar day is about 24 hours. A sidereal day is equal to 23 hours, 56 minutes and 4.09894 seconds.
8. Hour: Hour is not the basic unit of the International System of Time Units (the basic unit of the International System of Time Units is seconds), but an auxiliary unit of time coordinated with the basic unit of the International System of Units. Except leap second, one hour is generally equal to 3600 seconds, or 60 minutes, or 1/24 days. "H" is often used in English or mathematics.
9. Minute: Also called minutes, it is the unit of measurement of time. Minute is English, which means "tiny" and also means min. Engraving = 15 minutes, word =5 minutes (usage in southern Fujian and Guangdong).
10, second: it is the basic unit of time in the international system of units, with the symbol S, and sometimes it is marked as sec with English abbreviations.
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