Find the time and date of OS installation on Windows and Linux

How to find the time and date of OS installation on Windows and  Linux

Windows:- 

Syntax or command:- Systeminfo | find /i "INSTALL DATE"

WINDOWS AGE FINDER COMMAND BY 6AN71T

Lovable Linux:-

Syntax or command:- dumpe2fs $(mount | grep 'on \/ ' | awk '{print $1}') | grep 'Filesystem created:'

LINUX AGE FINDER COMMAND BY 6AN71T

I hope this information is useful for you.