What is the constellation on April 20th?

Aries, the first house of the zodiac, is located in the east of Pisces and the west of Taurus. His date of birth is from March 2 1 day to April 20 in the Gregorian calendar.

Aries is a small dark constellation, and its three main stars, α, β and γ, form an obtuse triangle structure, which is very easy to identify without light pollution, but its other stars are dim and difficult to distinguish. These three stars are arranged in the shape of an old pistol. From late autumn to spring, it always flashes in the sky.

Extended data:

The most famous celestial bodies in Aries are the three main stars α, β and γ. Connecting Orion γ star and Cebu star, extending about twice the distance to the northwest, there is a famous open cluster-Pleiades cluster. When the weather is clear, you can see seven bright stars in this cluster, so it was also called "Seven-Star Group" in ancient China.

The Pleiades cluster is 450 light-years away from the Earth with a radius of 13 light-years. Observed with a large telescope, it can be found that there are more than 280 stars in the Pleiades cluster. Another open cluster is called Biju Cluster, which is a mobile cluster located near Biju, but Biju is not a member. Bi cluster is 0/43 light-years away from Earth/kloc-and has about 300 members.

Baidu encyclopedia-Aries