Are the twelve constellations calculated by lunar calendar or solar calendar?

Because both constellations and solar calendars come from the west, constellations are divided according to the birthdays of the solar calendar. Compare birthdays in solar calendar with the following table:

Aries (

3.2 1 - 4. 19

)

Taurus (

4.20 - 5.20)

Gemini (

5.2 1 - 6.2 1)

Cancer (

6.22 - 7.22)

Leo (

7.23 - 8.22)

Virgo (

8.23 - 9.22)

Libra (

9.23 - 10.23)

Scorpio (10.24-11.21)

Sagittarius (11.22-12.25438+0)

Capricorn (12.22-1.19)

Aquarius (

1.20 - 2. 18)

Pisces (

2. 19 - 3.20)