Time zone related methods for DateTime
Predicate indicating whether or not the instance represents a floating time
Determine if the receiver has a local time zone, i.e. it is not a floating time or a UTC time
Returns the simultaneous time in the specified zone.
Return the timezone id of the receiver, or nil if it is a floating time
Returns a instance that represents the time in UTC.
Predicate indicating whether or not the instance represents a ZULU time
Return the receiver if it has a floating time zone already, otherwise return a DATETIME property with the same time as the receiver but with a floating time zone
[Validate]