Quincy - dry fasting when you have an infection is actually the best way to beat it.
Nabster - I'm going with what is the most likely equivalent to Shahr Ramadan, from all the discussions it appears to be the 3-day full moon phase CLOSEST to the autumn equinox. It's only called the Harvest Moon in Europe obviously Muhammad's people didn't call it that...and no technological wizardry is needed, the earlier rising times after sunset as well as the increased brightness compared to other moons identify it.
I'm not following where you're getting the '7th full moon after the spring equinox' measurement from? Please explain...
Sardar - As I understand it to fast a day it has to be from first light to last light. Sunrise to Sunset is not good enough. I am taking it to be the beginning of civil dawn til the end of civil dusk. Today this is from 6:09am til 20:05pm where I live in Wales, UK.