Show Build date and time in Marlin 2.0 Is there a command to show the compile date and time of the Marlin 2.0 firmware? Also, is there a way to show this info at boot up?
You can show the compile date and time during bootup by changing the constant STRING_SPLASH_LINE2 in Configuration.h:

#define STRING_SPLASH_LINE2 __DATE__ " " __TIME__