Derick3, welcome to the forum! There is a program named Glary Utilities, it has a duplicate file/folder option. You run the tool, it'll show you the duplicate files. But you must exercise caution and review each file and exclude ones that aren't of the same date in question.
Prior to deleting them, I highly advise that you backup or copy the folder to a flash drive, backup drive, or DVD(s). I hope that it's not that large of a folder.
Glary Utilities can be found at:
There are many tools that comes with this app, please be careful of what you use. Stay away from the registry tools, optimizers, etc. They are potent tools, and can cause damage to your system, if you don't know how to use them. The duplicate file/folder finder is safe, but you must still verify the date and folder to make sure of what you're deleting.
Best of Luck,