good40 makes a valid point here. It is difficult to determine timing. The deeper you get the tougher it gets and the more problems you can encounter. Once a couple wells are drilled or if you can get good geology from existing offset wells then you can start to make estimates. Also Coring , Logging , Testing can certainly accumulate days. Another consideration is what size hole they are drilling, What can they run for bits, Whats the Mud weight. Alot of variables to consider and they don't tell us the peramiters they are operating under,