I went searching around for this through Google (pointed at this site for results after a general web search) and pretty much all the results came up with met for Mission Elapsed Time and lct as ??? - although one person did correctly guess LaunCh Time. Regardless, none of the posts explained exactly how KSP uses these elements so I did some quick experiments to find out. Hopefully this'll come up for anyone else searching about these in the future. lct (LaunCh Time) - this is the number of seco