Philadelphia fans are heading toward sports nirvana tomorrow and will need a few extra screens to go along with their chips, hoagies, and beverages.

In a rare instance, Philadelphia will experience a sports equinox.

Here's what to know about the planets aligning for Philly sports.

What is a sports equinox?

A sports equinox is when all four major sports seasons intersect, and a city with all four teams has them play on a single day. For Philadelphia, that's happening on Oct. 9 Expert MLB daily picks: Unique MLB betting insights only at USA TODAY

The events used to be incredibly rare and didn't happen from 1985 to 2001. With the expansion of Major League Baseball's playoffs and the NHL and NBA both starting in October, it has increased in frequency.

When are the Philadelphia teams pl

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