What would I have called them ?

I have just began to archive many of my pictures and even though I save everything at least twice I can be very untidy and don’t always remember what I saved things as. I am also paranoid that my computer or hard dive, or both, will crash.! So I have started to save important pictures to an external data bank off site entirely.
This morning I got two requests for photographs taken several years ago , one four years ago and one five years ago. My heart sank as I started the search, when were they taken ? What would I have called them ? , did I delete them ?
Amazingly within twenty minutes I had located both pictures I was delighted. While looking I discovered this picture of the twilight on Carramore Strand taken exactly four years ago!