last Sutdown date

If you want to know  exact last shutdown time of your PC.Just do the following steps,
Goto start ->Run.Here you type compmgmt.msc and hit enter button.A computer management window will open.

First you click on “Event Viewer”on the left side of the window,under you click “Windows logs”

After then you click “system” double click it will be open.It shows some system files,scroll down and find out the EventLog with Event ID 6006,it will show you correct time and dates of last PC shutdown.