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I'm John Batchel with my colleague Bob Zimmerman.

His book is Genesis, The Story of Apollo 8, The First Man Flight to Another World.

It is December of 1968.

The mechanics of launch give them a six-day window.

And what does that mean, Bob, six-day window?

It means they can launch within that six-day

period and do their mission of the moon and the earth is in the same is in the right position

to do so they were fortunate they were no delays they launched at the very first uh opening of

the window and launched on December 21st on their way into Earth orbit.

And then they spent about one full orbit in Earth orbit, testing their systems out to make

sure everything was working because they didn't want to leave Earth orbit unless they knew

...