if the constellation Pegasus has just left the night sky, how many more months until winter break? How do you know?

As an AI language model, I do not have access to current date and time information to provide you with a specific answer to this question. However, typically winter break falls in December for many schools and universities, so if it is currently a few months before December, it might be safe to say that there are a few more months until winter break. The departure of the Pegasus constellation from the night sky is not necessarily related to the timing of winter break.