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.

Accessible via the 37th & Spruce Sts and 34th & Market Sts subway stations.

Before you fire up the GPS and willingly merge into the Jersey Shore gridlock, here is your definitive guide to the best and worst times to hit the road this long weekend.

"LUZIA" showcases Mexican culture under the Big Top at the Greater Philadelphia Expo Center in Oaks through June 7.

An HBO series filming in the Philadelphia area is expanding its casting search, now seeking background actors for paid roles.Heery Loftus Casting is now looking for men and women of all ethnicities, ages 18 and older,

The Blue Moon reaches peak illumination at 4:45 a.m. EDT (0845 GMT) on May 31, as it sits opposite the sun in Earth's sky. Viewers in the U.S. will get their first glimpse of the full moon as it rises above the eastern horizon around sunset on May 30.