Atlas V Launch Friday afternoon.

Ground crews will secure the rocket for a quiet evening leading into Friday's launch opportunity. Countdown clocks will start ticking at about seven hours before liftoff time.
The day's 40-minute launch window opens at 2:14 p.m. and closes at 2:54 p.m. EDT.
If the flight is scrubbed for some reason, a backup launch opportunity is available on Saturday between 2:10 and 2:50 p.m. EDT.

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