Variables

Name	Type	Description
Clock	TimeSpan	Current time of day including optional time offset set on link
ReferenceTime	DateTimeOffset	Reference time set on link. Usually this is the start time of day
HasRerenceTime	Bool	Checks for a rference time is set
Countdown	TimeSpan	Current countdown if reference time is set reference time is in the future
IsCountdown	Bool	Checks for is before reference time
Runtime	TimeSpan	Current runtime if reference time is set and reference time is in the past
IsRuntime	Bool	Checks for is after reference time