Could somebody please clarify what the Argus Rare rotation time is? I keep getting conflicting information varying from every hour, every 4 hours, every 6 hours and every 12 hours. It would really help me do the Commander of Argus achievement if I knew exactly when the rotation changes please


Please Help.
Thanks !
I didn't find the right solution from the internet.
References:
-http://www.mmo-champion.com/threads/2304697-Clarification-on-Argus-Rare-rotation-time
- Startup videos Examples