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How to convert between Delphi TDateTime and the Unix timestamp format
I recently had to convert between Delphi TDateTime and Unix timestamps. The issue is that the two formats are quite different. Delphi uses a float where the integer part is the date, and Unix uses an integer count of the seconds since 1/1/1970.
After a bit of looking around, this is what I ended up using:
UnixStartDate: TDateTime = 25569.0; // Sets UnixStartDate to 01/01/1970
SecondsPerDay = 86400;