Does the long hand of the date clock have to point to 0 o'clock?

Long hands indicate "minutes" on the day, month and clock ~

When the long pointer points to 0, it is the complete time of one hour, one day and one cycle. You have to complete a 360-degree 60-minute cycle, and you can't miss a minute ~

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To this end,

1, the hour hand of the day clock rotates 360 degrees from 0: 00, and returns to 0: 00 for 24 hours with the period of 12 hour, which must be a day's representation.

2. The long hand of the calendar, that is, the minute hand, rotates 360 degrees for 60 minutes from 0: 00 and returns to 0: 00, which must mean half an hour, one hour.

The second hand of the date clock rotates 360 degrees from 0 and then returns to 0 for 60 seconds. It must be a minute.

45,000 years ago, Yan of the Loess Plateau measured the longitude and latitude lines of the sun and the earth, compiled the yellow calendar, and formally used the time concepts of day, month and year. The perpetual calendar era.

5. Before surveying and mapping "longitude and latitude lines", ancient Chinese people had created and mastered a series of applied science and technology such as astronomy, geography and mathematical chemistry, and named them the five planets of Jin Mu.

Our earth evolved from mercury.

The moon on the Moon was formed by the magma erupted from Mount Everest one million years ago.

The moon revolves around the earth for one month.

The earth goes around the sun and the ball once, which is a year.

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Human civilization originated from China people ~