Found Cga And Ega Files On My Laptop Dated As Having Been Created In 2030

I was in my Documents folder of my Windows 7 laptop, trying to find a grocery list, so I chose to sort by "Recently Modified", knowing my document should be at the top.
But the results showed documents created "Sometime in the future" and the date on the documents was May of 2030. This suddenly feels like I'm in a sci-fi movie and I'm about to get an email from my future self or something.

I Googled what CGA and EGA files are. Apparently CGA files have to do with 3D animation. I do have a couple of open source 3D software on the laptop that I haven't really found the time to experiment with.
It said EGA files were also some sort of graphics files, but I'm not clear on what it is or where it came from.

But why would they have future dates on them? It makes me wonder if they're malware and maybe some hacker future dated them, hoping that would prevent them from being discovered? Or maybe they are like a time bomb, and some process is set to go off and begin in May of 2030?

Has anyone heard of anything like this?