fixed time of day, represented as a number of seconds since the start of the day, where 0 is 00:00hs, 43200 is 12:00hs and 86400 is 24:00hs
Optional
default = TransitionMode.TM_FORWARD, controls the direction of time transitions
fixed time of day, represented as a number of seconds since the start of the day, where 0 is 00:00hs, 43200 is 12:00hs and 86400 is 24:00hs