2.1.3.1.1.12 Property: X-MS-WKHRSTART
RFC Reference: N/A
Number of Instances Allowed: 0, 1
Format: Local Time ([RFC2445] section 4.3.12)
Brief Description: Specifies the starting time of the calendar owner's workday.
Importing to Calendar objects
This property SHOULD<24> be ignored.
Exporting from Calendar objects
If this iCalendar does not represent the primary calendar of the owner, this property SHOULD be omitted. Otherwise, this property SHOULD<25> be the start time of the calendar owner's workday, specified as a local time with the TZID parameter (section 2.1.3.1.1.12.1).