Hi, I think that this is the sun chart that you were thinking of:
Camp sun/shade - Rafting Grand Canyon
Have a great trip. We launched on Thanksgiving a few years ago and lucked out with great weather, save for some rainy days towards the end. The most miserable camp we had was at backeddy (below Deer Creek on the left) which, we found out after the fact, gets hardly any sun between October and March and was frigid. Think about getting up earlier than you think you need to for the longer hikes - we finished the deer creek to thunder river loop after dark (which may explain the crappy camp). We laid over at Nakoweap, Bass, and 220 (because we stayed on the river all day and made 35 miles to keep warm as it poured on us. Luckily there was a lot of whisky left). Look up how to make a river sauna because it will pay off, and bring shorts AND a dry suit. Cheers!