Is the constellation based on the lunar birthday or the solar birthday?

Constellations are based on the solar calendar.

Constellations originated in the west, so they are judged according to the birthday of the solar calendar. The zodiac signs include Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius and Pisces. As long as you know the date of a person's birth year in the solar calendar, you can know which constellation this person belongs to.

Extended data:

The constellation time is as follows:

1, Aquarius: 1.20 ~ 2. 18.

2. Pisces: 2. 19 ~ 3.20.

3. Aries: 3.2 1 ~4. 19.

4. Taurus: April 20th to May 20th.

5. Gemini: 5.2 1 ~ 6.2 1.

6. Cancer: 6.22 ~ 7.22.

7. Leo: July 23rd to August 22nd.

8. Virgo: 8.23 ~ 9.22.

9. Libra: 9.23 ~ 10.23

10, Scorpio:10.24 ~11.22.

1 1, Sagittarius:11.23 ~12.5438+0.

12, Capricorn:12.22 ~1.19.