that's it! i'm timing it c; will let y'all know when it's finished.
i will start when the sun begins to rise in FP c:
EDIT: sun rise takes about 00:06:44 c:
EDIT2: sun is down all the way. took about 01:07:06
EDIT3: amadog is right c:! it took 02:00:01 for the cycle to start over. That's two hours and one second