Is the date of the constellation different every year?

The date of the constellation is different every year. There is a small change every year. Because the date and time of the twelve constellations are divided according to the neutral time of the traditional twenty-four solar terms in China.

For Pisces in the zodiac, the time when the sun enters Pisces corresponds to the "rain" in the twenty-four solar terms (at this time, the sun is located at 330 degrees of the yellow meridian and meets at some time between February 18 and February 20 in the solar calendar every year). Here are a few examples to illustrate:

Example (1):

20 13 solar calendar February 18 20: 1: 35 (rain) The sun began to enter Pisces. That is to say, the time from Gregorian calendar 201365438+51:421October 20 (severe cold) to "rain" belongs to Aquarius; 20 13 The period from "rain" to 19: 00 and 1: 55 (vernal equinox) belongs to Pisces.

Example (2):

1995 Gregorian calendar February 9 1 1: 00+00: 44 (Rain) The sun begins to enter Pisces. That is to say, the time from Gregorian calendar 1995 65438+2654381October 20 +0: 00: 27 (severe cold) to "rain" belongs to Aquarius; The period from "rain" to solar calendar1March 2, 995/at 10 and 14 minutes and 27 seconds (vernal equinox) belongs to Pisces.

Example (3):

1928, at 5: 00 on February 20th in the solar calendar, 19, 12 seconds (rain), the sun began to enter Pisces. That is to say, the period from Gregorian calendar192865438+1October 2 1 before 14: 56: 36 (severe cold) to "rain" belongs to Aquarius; The period from "rain" to solar calendar1March 2, 9281day at 4: 44 and 1 1 second (vernal equinox) belongs to Pisces.