1/ thread on coding and timezones https://twitter.com/LibertyFarmNH/status/1310924205773541377 … I'm currently reading The Apollo Guidance Computer: Architecture and Operation by Frank O'Brien and am now in the chapter about spatial reference frames REEEEEEEEE something like 7 different reference frames >>>
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4/ I recall learning in some other context that when the Saturn V launched one thing it did was roll like 8 or 15 degrees or whatever along its vertical axis. ...because it was transitioning from Florida, USA lat-long coordinate system to some other system, and >
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5/ it was just easier to roll the entire dang ship along its axis before handing off from guidance program 1 to 2 than to have the software agree on a single standard.
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