Create Windows Service Log file on system ShutDown or TurnOff in C#

I changeed the startup type of the service from Automatic to Automatic Delayed.

I just turn the "serviceInstaller" property "DelayedAutoStart" to true and it worked.

after reboot it started again.

But I would like to question another thing,

I have already made a txt file that keeps the start time of the service, the interval and when it stops.

But when I close the computer it doesnt keeps the time that the service stopped. Do you know how to do this?

Or if the power cut how to keep record for this