Behemoth & Odin spawn times

So i'v been searching around for the exact times Behemoth and Odin fate spawn times but couldnt find an exact answer, so if anyone knows please do tell! :o

Their messed up anyway even if you do get to them. There's too many people, you can't see them even if you do get there, the area crashes also, so its pretty pointless until they fix it...

Behemoth has never "disappeared" for me for more than a couple of seconds, and even then it was mostly due to me running out of combat range.. Anytime I was within a reasonable distance from him I was able to see him. This is on PC, mind you, I'm sure it's a much larger problem on PS3..

i just want my vanity gear then im not doing them ever again lol.

I haven't spent any of my horns yet. I kinda dunno what I want yet, I'll probably horde them until I can buy everything all at once. XD
Oh also, no idea on his spawn time. To be honest I doubt it's set in stone.. FATE's in general seem pretty random to me, so I wouldn't be surprised if they weren't exceptions. That said I'd guess they can only pop once a day, if not only once every two days perhaps. When is harder to say.

There are set times to the spawns? I thought they were random.
In that case, I need them too :p