jimyjoe76

I would assume it would be Mission Elapsed Time.

First, place your orbit into an escape trajectory from Kerbin. Once you are in Kerbol's SoI, go to your 'Orbital Operations' and go to transfer - Duna, place your Periapsis ~8 KM. The drag from the atmosphere of Duna should put you into an orbit of Duna. If you wish to remain in orbit, go to your new apoapsis, and burn prograde until your periapsis is over 60 KM. Happy Flying! -Dakota