If your Date Modified information in your file manager only shows day and month and not year, there’s a quick fix to get the year back. This seems to affect Windows Explorer, the file manager I use xplorer2 and also the date display in my email client Eudora. It may also affect MS Outlook but I can’t confirm this as I don’t use it.
You won’t find a fix in the Options for these programs as they all pull the date information from the Date and Time format settings for your PC. In Windows 7, you’ll have to change the Short Date display to show the year and this will be then used in the other programs. It must have been modified by someone in the past to show only day and month. You can modify the Short Date format by going to the Start button, Control Panel, Region and Language and on the Format tab, change the Short Date to include the year.
You can set up the Short Date display just as you want it by going to the Additional settings button shown on the image above. Once you apply it, that date format including the year will show up in your date information in your file manager.