Terran Synchronized Time
Terran Synchronized Time (not to be confused with Terran Standard Time) is a time measuring system that relates the clock on a given world to a traditional clock dividing the day cycle into 24 hours. Depending on a given world's actual rotation, these local "hours" can be significantly longer or shorter than a standard metric hour. For example, Pacifica has 35 minute hours. By this metric, 1200 hours always corresponds to local noon.[1][2]
Even under Terran Synchronized Time, dates follow the standardized metric of the universal Terran Calendar (TC) related to 0° longitude (Greenwich) on Terra and will have nothing to do with the local seasons.[2] (Though various forms of local time remain viable.)
Notes
Unlike Terran Standard Time, which is used in a plethora of sources, Terran Synchronized Time was only described in En Garde and BattleTechnology magazine.