The northern constellations Cassiopeia and Ursa Major, for instance, are easy to see for observers in the northern hemisphere, but invisible to those living south of the latitudes 20°S and 30°S respectively. JANUARYĮven though each given month is the best time to observe a particular constellation in the evening, the constellation may not be visible from every location on Earth. ![]() These are not all the constellations that can be seen in the evening sky at any particular time, but simply those that are best observed at the given time of year. Each constellation is best seen in the evening sky at a certain time of year, whether it only briefly shows up above the horizon or it is visible throughout the year from a certain location.īelow is the list of constellations visible at 9 pm each month. They move by 90 degrees from one season to the next and return to the same position after a full year. Stars rise and set four minutes earlier each night and, as a result, we see constellations rising and setting two hours earlier each month. Constellations that can be seen in the evening sky change from month to month.
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