You may see the rare blue moon over the Philadelphia area this weekend

Look to the sky Saturday and Sunday nights, and you will see the rare heavenly sight known as a blue moon. It is the second full moon that occurs in a calendar month and only occurs every two to three years.

You may see the rare blue moon over the Philadelphia area this weekend. Look to the sky Saturday and Sunday nights, and you will see the rare heavenly sight known as a blue moon. It is the second full moon that occurs in a calendar month and only occurs every two to three years. This weekend's blue moon is also a micro-blue moon, meaning it will appear up to 6% smaller than a typical full moon because it will be farther from Earth than any other full moon this year. So, will the weather cooperate this weekend? It looks favorable with mainly clear skies at sunset both Saturday and Sunday nights, eventually turning partly cloudy overnight. Moonrise is at 8:15 p.m. Saturday, just as the sun is setting in the west, and the moon will set at 5:14 a.m. Sunday. Moonrise is at 9:13 p.m. Sunday and the moon will set at 6 a.m. Monday. Look to the ea...