Port is a published property in IdTime, and indicates the port number to used for accessing the time server. The default value for Port is IdPORT_TIME as assigned during initialization of the component. 

Host and Port are used to open the connection to the time server when the date time value is read using DateTime or DateTimeCard. 

Set Host to the IP address or host name for the time server prior to accessing DateTime or DateTimeCard.

Port 

DateTime 

DateTimeCard