X time

zone standard time (zone time) (ZST)

time to climb / climb time

time-gain control / gain time control

real time kinematic / real-time kinematic (RTK)

takeoff time (T time)

acquisition time

arrival time

clearance time

critical time

date-time group (DTG)

Driven Ammunition, Reduced Time of flight (DART)

earliest anticipated launch time (EALT)

endurance time

estimated time of arrival (ETA)

estimated time of departure (ETD)

force time-phasing

frequency, intensity, time, type (FITT)

full time military duty

full-time charter (FTC)

go time

Greenwich Mean Time (GMT)

holding time

imaginary time

landing time

launch time

logistics lead time

long lead time items (LLTI)

maintenance down time (MDT)

mean down time (MDT) (logistics)

mean time between critical failure (MTBCF)

mean time between failures (MTBF) (logistics)

mission, enemy, terrain (and weather), troops, time available, civil considerations (METT-TC)