What Caffiene said. Dragon Reborn is approx 674 pages, and there is a three day interval, whereas Shadow Rising almost twice as long and there was a ten day interval.
I estimate I read about 90-110 pages an hour while reading the Hunger Games and HP, but those books are really easy reads. WoT has been a slower read because of the internal languages used (many of which seem to include five syllable words at a minimum), so I'm guessing my speed for those books is about 70-90 pages an hour or so (just a guess, my Kindle copy of these books doesn't have page info, only percentage completed).
Since I started reading again, I remembered how much I love it. How the hell did I forget that? I've been forgoing TV most nights to read instead, so I think I'm reading on average 4-5 hours on a weekday, and maybe 4-5 hours total over the weekend. I should be able to get through any of the WoT books in less than five-seven days, so I'm a little unhappy with how long it took me to read Shadow rising. I want to finish Fires of Heaven no later than 21 May.