String - Offest hours and minutes from GMT.

GetTimeZoneAsString is a String function that returns a value that indicates the offset of the local time zone from GMT (Greenwich Mean Time). THe value is expressed as a positive or negative number of hours and minutes from UTC. For example: 

GetTimeZoneAsString calls GetTimeZoneHour and GetTimeZoneMinutes to calculate the offset from UTC. GetTimeZoneAsString is used as the read access specifier for the TimeZoneAsString property.