DAV property name: http://schemas.microsoft.com/mapi/remindertime

Data type: PtypTime ([MS-OXCDATA] section

For non-Calendar objects, the PidLidReminderTime property ([MS-OXORMDR] section gets or sets the initial signal time. For Calendar objects, gets or sets the time after which the user would be late; that is, the start time of the appointment.

For more details about the PidLidReminderTime property, see [MS-OXPROPS] section 2.224.