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

Calculate according to the solar calendar

constellation

Date (Gregorian calendar)

English name

Aries constellation

(3/2 1

-

4/20)

Aries constellation

Taurus constellation

(4/2 1

-

5/20)

Taurus constellation

Gemini

(5/2 1

-

6/2 1)

Gemini

Cancer constellation

(6/22

-

7/22)

Cancer constellation

Le Signe du Lion

(7/23

-

8/22)

Le Signe du Lion

virgo

(8/23

-

9/22)

virgo

libra

(9/23

-

10/22)

pound

Scorpius

( 10/23

-

1 1/2 1)

Scorpio people

Sagittarius

( 1 1/22

-

12/2 1)

Sagittarius

Capricorn palace. Compare CAPRICORNUS

( 12/22

- 1/ 19)

Capricorn palace. Compare CAPRICORNUS

Aquarius constellation

( 1/20

-

2/ 18)

Aquarius constellation

fishes

(2/ 19

-

3/20)

fishes