Ok, let's ignore the current StarTrek dating system for a second. I'm curious as to what people would consider a good way to measure the passage of time that would be acceptable to any race, and what portions it would be measured in. ie. fractions of galaxy rotation, or the vibration of a particle.
im curious, since a day on earth is obviously not a day on vulcan or romulus. different races have tolerences for different day lengths etc. and going from one day on a planet from one day on ship, space station, or other planet would likely cause jet lag.
even something as simple as measuring someones age becomes a problem.