If you look at what constellation you are, should you look at the lunar calendar or the Gregorian calendar?

The twelve constellations look at the solar calendar, not the lunar calendar, because the twelve constellations originated in the west.

The twelve constellations, namely the zodiac, are the twelve regions of the zodiac described by astrology, including Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius and Pisces.

Extended data:

The "constellation" we usually say refers to the "sun constellation"; That is to say, people on the earth are the center, and at the same time, we can see which constellation the sun is on (Greek zodiac: meaning ~ the circle made by animals, also known as the "zodiac"), so we can say what constellation that person is.

According to astrology, each constellation has a corresponding relationship with all aspects of human beings.

References:

Twelve constellations _ Baidu Encyclopedia