Last confirmed fight : 2013-18-09 1700 GMT
Estimeted next pop : 2013-30-12
This information may interests some people, so I will post the last Odin's fight time.
Odin spawn every two days. But it doesn't seems to be a full 48 timer, so don't expect him to spawn at the same time every two days.
I will miss some fights. So I encourage you to reply if you know when I fight occured. I'll try to keep this post up to date but your participation will be necessary.