What calendar is the constellation based on?

It is calculated according to the solar calendar.

For example, today is 1 1.2.

I think that's what you said.

Aries Aries

(3.2 1-4. 19)

Taurus Taurus

(4.20-5. 19)

Gemini Gemini

(5.20-6.20)

Cancer constellation

(6.2 1-7.2 1)

Leo Leo

(7.22-8.22)

Virgo Virgo

(8.23-9.2 1)

Libra Libra

(9.22- 10.22)

Scorpio people

( 10.23- 1 1.2 1)

Sagittarius

( 1 1.22- 12.20)

Capricorn Capricorn

( 12.2 1- 1. 19)

Water bottle-water bottle

( 1.20-2. 18)

fishes

(2. 19-3.20)