Total solar eclipse and total lunar eclipse are the days of the lunar year.

The solar eclipse is on the first day of the lunar calendar. At this time, the sun, the earth and the moon are in a straight line, and the moon is between the earth and the sun, so from the earth, the sun may be covered by the moon.

The eclipse is on the fifteenth day of the lunar calendar. At this time, the sun, the earth and the moon are also in a straight line, and the earth is between the moon and the sun, so from the earth's point of view, the moon may be covered by the earth itself.

A solar eclipse, also known as an eclipse, is when the moon moves between the sun and the earth. If the three are in a straight line, the moon will block the light from the sun to the earth, and the shadow behind the moon will just fall on the earth. At this time, the solar eclipse happened.

Eclipse is a special astronomical phenomenon, which means that when the moon moves to the shadow of the earth, the area between the moon and the earth will be blocked by the earth because of the sunlight, and the moon will be missing.

At this time, the sun, the earth and the moon are exactly (or almost) on the same straight line. Eclipses can be divided into three types: partial eclipse, total eclipse and penumbral eclipse. A solar eclipse can only occur around the fifteenth day of the lunar calendar.