2.2.1.4 PidLidReminderTime Property
Type: PtypTime ([MS-OXCDATA] section 2.11.1)
The PidLidReminderTime property ([MS-OXPROPS] section 2.224) specifies the initial signal time for Message objects other than Calendar objects. For Calendar objects, the value of this property represents the time after which the user would be late; that is, the start time of the appointment. Clients MUST set the value in UTC.