Where are OS X screensaver logs written?

Question

macOS

It is necessary to find out in the program the date and time of the last start and stop of screensaver-a (splash screen) on OS X. How is it possible to find out? Is there a log file in this OS where this data is written (this is definitely not written to system.log)? Or is there any console command to find out when screensaver was last started and stopped?