Is the date of the constellation according to the solar or lunar calendar?

Timetable of twelve constellations (date standard is solar calendar)

Aries constellation

3.2 1 - 4. 19

Taurus constellation

4.20 - 5.20

Gemini

5.2 1 - 6.20

Cancer constellation

6.2 1 - 7.22

Le Signe du Lion

7.23 - 8.22

virgo

8.23 - 9.22

libra

9.23 - 10.22

Scorpius

10.23 - 1 1.2 1

Sagittarius

1 1.22- 12.2 1

Capricorn. Compare CAPRICORN

12.22 - 1.20

Aquarius constellation

1.2 1 - 2. 19

fishes

2.20 - 3.20