[quote=@Lexicon]
Now we just need to figure out how long we've been exiled. A month? A year? 
[/quote]

Okay, so this is a spot where I feel I ought to weigh in.

I'm going to say you guys have been exiled four seasons. This gives you time to have found the Hidden Valley, dealt with the harsh winter seasons, and have gotten a little building done so most folks actually have houses. However, this coming planting season is your first one in the Valley. This is also your first Sacred Time since being exiled.