Namespace: ITHit.Collab.Calendar
This property of the same as Start property: "floating" time (without time zone), or time in UTC.
In case the Start property contains time zone or is in UTC, this property must be in UTC (Kind is set to Utc).
In case the Start property contains "floating" time, this property must be "floating" (Kind is set to Local).
This property can contain either date and time or date only. The value type must be the same as the one stored in Start. To find out if time is specified check the Time flag of the Components property.