Internet Direct (Indy) Version 9.0.2 Beta
TIdTime.BaseDate
Initial Date used for time server calculations.

property BaseDate: TDateTime;
Description
BaseDate is a TDateTime property that indicates the initial date used for Time server calculations. When the BaseDate for the client and server are identical, and exceeds the value of DateTime, DateTime can contain values beyond the year 2035.

Do not change BaseDate unless the Time server uses the same value for it's BaseDate.