What constellations can you see in the northern hemisphere?

For the mid-latitude of the northern hemisphere (40° N-50° N), the arch polar constellations are Ursa minor, Ursa major, Draco, Cepheus, Cassiopeia and Andromeda.

For the Arctic region, the northern celestial pole is at the zenith, and all the constellations in the northern celestial sphere are arch constellations.

No constellation on the equator can be seen completely all year round, but all the stars on the equator can be seen.

For the mid-latitude in the southern hemisphere (40° s-50° s), it is the Antarctic constellation (where the south celestial pole is located), the Tian Yan constellation, the mountain constellation, the dragonfly constellation and so on. Because there are no bright stars in the Southern Celestial Constellation, it is not very noticeable.