Конвертируем TDateTime в Unix Timestamp

{
  Sometimes you want to communicate with mySQL or other databases using
  the unix timestamp. To solve this difference you may want to convert your
  TDateTime to the unix timestamp format and vice versa.
 
}
 
unit unix_utils;
 
interface
 
implementation
 
const
  // Sets UnixStartDate to TDateTime of 01/01/1970
  UnixStartDate: TDateTime = 25569.0;
 
function DateTimeToUnix(ConvDate: TDateTime): Longint;
begin
  //example: DateTimeToUnix(now);
  Result := Round((ConvDate - UnixStartDate) * 86400);
end;
 
function UnixToDateTime(USec: Longint): TDateTime;
begin
  //Example: UnixToDateTime(1003187418);
  Result := (Usec / 86400) + UnixStartDate;
end;
 
end.

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