Resetting the rare quest calendar

Back at the end of July, I asked if a rare quest was going to spawn early. The string of rare quests with exactly 10 days between has not held true since then. And, then there was the extra (Farholme Pass). Has the spacing gone back to the random (non) pattern of pre-rev 1.14?

I have seen most guesses at 8-10 days with some 7-10 with some dis-agrrement about which will spawn next.

Opinions with predictions, anyone?

Forecast for new missions, I believe to be