Originally posted by: So
Originally posted by: bernse
They would come up with a "standard" time between the two for things that are interdependent. I suspect it would be GMT.
Yup standard and local time.
Seasonaly stuff would be like it is living in the southern hemisphere now, local time will be like any timezone, and GMT will still be the standard. Likely, hours, Minutes, and seconds will still be the same, military time might be adopted as the standard for, say, a 30 hour day.