Earlier quoted context omitted.
It's from sunrise to sunset, no? Can't you get it on at night instead of during the day?
Don't know how this works for Muslims, but if it's anything like for Christians, the goal is to not have the desires to begin with, not just refrain from acting on them (though that's a good start).
Which is an empty exercise. You can't "stop having desires" for a month. Just another ritual to control the population, huh?