Well, the hour is real time, not minecraft time, I will double check the evil scheme, I thought I had fixed that the last time someone had issues after accidentally opening it.As others have reported, I am having some issues with the Queen's quest line and the Evil Scheme not registering. Also, the key wouldn't open the door - just made it flick open and closed. On the up side, the update fixed the quest not showing. I have stayed in Reder's area for 2 minecraft days and he has not respawned so I presume the hour you speak of is real time? And just as an fyi, I created three new worlds to check out any changes and both times the king told me to begone rather than giving me the fetch quests.
The door is odd, it should be staying open for 6 seconds....I will double check the times for their respawn...good news is the major content update is coming this weekend, so the fixes won't be too far away.