WOW! That's way too long, 46 hours! Something's not right. I have several games on pause so unpaused one so i could check this out for you. I had the tribe finish harvesting their crops and the crop timer now says the crops will be ready to harvest again in
63 minutes @ 2X speed, 125 minutes @ normal speed and 209 minutes @ 1/2X speed.
Any chance your computer has been time traveling/time warping? It really messes up the timers in the game.