Date and Time Functions System.Diagnostics.TStopwatch

 http://agnisoft.com/delphi/jclhelp/Date.htm

https://docwiki.embarcadero.com/Libraries/Alexandria/en/System.Diagnostics.TStopwatch 

Project JEDI Code Library (JCL) - TJclCounter.

http://agnisoft.com/delphi/jclhelp/