You can see the winter triangle every night?

The winter triangle can be seen every night in winter, in the second half of autumn in the east, in the first half of spring in the west, but not in summer.

The triangle formed by these three stars lies on the equator of the celestial sphere. If it is not easy to find, you can first find the three belt stars of Orion on a straight line, and find Betelgeuse on the shoulder of Orion on the upper left; Look for a bright star Betelgeuse on the left (east) and find Sirius at a similar distance, which is also very bright in the sky.

Extended data:

The winter triangle consists of Sirius in Canis Canis, Nanhe III in Canis Canis and Betelgeuse in Orion. The triangle formed by these three stars is located at the equator of the celestial sphere, so it can be seen all over the world.

Sirius is easy to see only in winter or early spring. In China, Sirius's trajectory is always in the south of the world. The farther north, the lower Sirius's altitude angle.

Sirius is only 25.4 times brighter than the sun, but its proximity makes Sirius so bright. Other similar stars are the dim south gate, compared with the distant but extremely bright Supergiant star, such as the old songs, Betelgeuse or Betelgeuse. The nearest big star to Sirius is Nanhesan, with a distance of about 5.24 ly.

References:

Baidu Encyclopedia-Winter Triangle