I hate to hijack the thread a bit, but I suddenly got a flashback from time spent using the Heavens for updating the Apollo Guidance Computer while playing the "authentic" mode of NASSP in the space sim "Orbiter", connected to a third-party program called "Virtual AGC". Yeah, the checklist for "Program 54 - Backup IMU Realign", or "V37E 54E" if you prefer; thankfully the sim had a toggle for Celestial Markers or else I would've been digging into astronomy lessons along with everything else on my plate.
Authentic navigation really does add a whole new dimension to the "simsperience", but man, it has to be an obsession if nothing else, especially if you aren't already familiar with the intricacies and can't spend as much time learning as professionals or serious hobbyists.
I remember this girl I dated briefly at the time, who said she was looking for a guy who could talk about something other than video games, what LC was up to, and other blah. "So okay, sweetie, how 'bout Cislunar Navigation Techniques?!"
Don't take any of this as some kind of discouragement though, mates, because I definitely appreciate what's happening here!