Here's why:
* Sirius is located in the constellation Canis Major (the Great Dog) and is visible from the Northern Hemisphere during the winter months.
* It rises in the east around sunset and is highest in the sky around midnight.
* While other stars and planets can be visible in the eastern sky during winter, Sirius is easily the brightest and most noticeable.
Keep in mind that the exact timing of Sirius's rising will vary slightly depending on your location and the date.
