What is the moon phase and the corresponding date?

The moon phase map corresponds to the lunar calendar date. New moon/new moon-the first day of the lunar calendar, the first quarter moon-the seventh or eighth day of the lunar calendar (the moon phase faces west), the full moon/moon-the fifteenth or sixteenth lunar calendar, and the second quarter moon-the twenty-second or twenty-third lunar calendar (the moon phase faces east). The spring tide appears with the date and phase of the lunar calendar, the first day of the lunar calendar (the new moon) and the fifteenth lunar calendar.

Introduction of moon phase

In fact, our ancestors have long mastered the moon phase and formulated the lunar calendar according to its periodic changes. The moon phase is actually related to the difference between the sun and the moon. But let's learn some terms first to make it easier to understand. The ecliptic refers to the route that the sun passes from the earth for one year. The ecliptic refers to the longitude on the ecliptic, measured from west to east, from 0 to 360, with spring as the starting point. The longitude difference between the sun and the moon refers to the angular distance between the sun and the moon projected on the ecliptic.