Shut Down system at schedule / specific time

We often want that let the system turn of at some specific time, or after some specific time. Many people use some third party softwares to do this. But this can be used without iuse of any third party software and it is very easy.
 
Method 1
Follow the following steps
 
1)Right click anywhere on the  desktop and select
New---->shortcuts
 
2)A box will open,type the following in the box
shutdown -s -t 3600
 
where 3600 is the number of seconds.You can change it as per your requirement.
3)Give a name say "autoshown" to the  shortcut and you're done.
 
To Cancel
This can be done by making a cancel key to stop the shutdown timer .Just follow the above steps but in the location of shortcut type this  shutdown -a
Done!!!!!!!!!!!!
 
Method 2
1)GO to start--->>Run
 
2)In the run box,type the following
at 11:35 shutdown -s
 
Where 11:35 is the time according to your system.Note time is always in 24 hr system.So take care while selecting the time.
To cancel
Just type following code in the run box:
shutdown -a
Done!!!!!!!!