Of course, it is.
 
When you have successfully created a wallet and it will generate a new Bitcoin address at the same time, so it is impossible that they were made on different dates.  The fact is that Bitcoin addresses aren't created, they are generated as a representation of the public key.  Technically, you will never know when it is generated.

The only one who will solve this is only you, remembering where did you save your password and your wallet ID.  I tried to look at my wallet files now and that was saved on my laptop notepad, as I can see there is a date when I save my backup files, probably you can find it there if when the exact time you have saved your ID wallet and password.  Just a simple guess if you are the one who created that wallet.