If you need to change the Created or Modified dates on a file you have two options Please follow the steps below: Change the date and time on your computer, then save the file Use a third-party utility. Using option two, my favourite utility is FileDate Changer – which is completely FREE and doesn’t require installation. Just download and run, even from a USB stick. With it you can drop and drag a list of files from either your local computer, a network drive or UNC path then select the dates and hit ‘Change File Date’.
You can download the utility from here: www.nirsoft.net/utils/filedatech.html
Select the file and enter the desired date.
Thats All !