Apollo 8 – Real Time Simulation
I recently ran a little experiment where I played through Apollo 8 using AMSO, but in real time. I tried to leave orbiter running continuously while I performed other tasks but keeping watch on a timer I had set on my phone to keep track of the time and be aware of upcoming events.
I did run into a few problems, I had a failure in the CM SPS engine which cut its efficiency down quite a lot. i was uncertain if I would have enough Dv left to make it back to earth, so I compromised and did not completely circularize the lunar orbit, as you can see in the above screenshot.
I followed the official Apollo 8 Timeline published by NASA to try to be as close as possible, but of course running a simulation is a bit different, but I was never off by more than a few minutes at most.