Board Thread:General Discussion/@comment-71.237.29.140-20130221003100/@comment-4787430-20130221024945

Yeah, 30-35 days is probably not right. It's supposed to be after 10 days, but have you waited at the location, or returned to the location before the respawn time? If you keep on returning to check to see if something respawned, the counter will reset and start over again.