Shortly after getting out of Privateer's Hold, I joined the Mages guild on the 6th of Morning Star a few minutes before noon.
28 days later, the 4th of Suns Dawn, I entered a Mages guild at 11am and clicked on the quest giver expecting to get promoted, and wasn't. Remembering the time I had originally joined, I loitered for an hour, clicked on the guy, and was promoted to Warlock (6th rank). I then enchanted an item, went on a quest, and returned 2 days later to find the guild open for me at 3am.
I've since exited to desktop and reloaded just to confirm I still had 24/7 access, I do. (I do not, however, have access to the Teleporter, the other rank 8 benefit).
Why was I granted this access?....I "think" it was because I was loitering inside the guild at the exact time my 28 day waiting period expired. I'm anxious to try this in the Fighters guild and a Knightly order (even though the Nights normally never give 24/7 access) but that will be a couple of game months down the road.
I'm wondering if this has ever happened to anyone else or if someone can confirm this "bug".