SpaceX scrubbed the company’s third rocket launch in nine days Sunday evening.

The launch window opened at 7:36 p.m. at launch pad 39-A at Kennedy Space Center.

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The next launch window opens around 7:30 p.m. Monday.

Crews test-fired the rocket engine Thursday.

The rocket will transport will the Intelsat 35e communications satellite, part of the company’s “Epic” system that provides communications services around the globe, according to SpaceX.

The launch was originally scheduled for April.