DrunkenMage
Intoxicated Arch-Mage
Several years, sure. But not 20 or 26, I think.
Well you never know, the Thalmor did get hurt a fair bit in the Great War and they were still fighting in Hammerfell for five more years. So it is speculation to when they arrived and then started carrying out the Talos Hunting. There is just too much doubt with the lack of a date in this matter so it would all be best guess.
For all we know to a Nord recent could be considered years ago.