Why does this article say AM?

[jeffreyice1]

The Hawthorne, California-based company is planning to fly one of its Falcon 9 rockets for a record-tying eighth time. The two-stage launcher will blast off from NASA's historic Pad 39A here at Kennedy Space Center in Florida at 8:37 a.m.. EST (0137 March 1 GMT) — if all goes as planned.

A SpaceX rocket will launch a Starlink satellite fleet tonight and you can watch it live. Here's how.

 

[COLGeek]

As opposed to PM?