Time is frequency and gravity , if you go to another planet , you will not get the same feeling as on earth, ie: on jupiter you would feel like the day never end, and you would age very very slowly, depending on how big the planet is , time feel different, astronauts in space age much slower than us in earth the dont suffer from gravity , when it come to frequency is what you feel as the days go on , the day you are born you enter this timeline and exist until your last breath, if you die tragically ( very fast in trauma) you would in fact in the right circumstance, become a ghost , for you, it would feel like nothing has change you would still see the world turn, but time would no longer affect you, your ethoral energy would remain as long as your consiousness remain, for me in the science of thing at this moment , time is but a mesure on clock, the time that separate me from winning the lotto, and the moment i go to sleep, for having been awake very often for more than 24hrs in my life i know the feel of time as when its missing, this is what my definition of time is