Egypt is two hours ahead of the standard GMT timing
The notion of time is, in fact, different from one country to the other and one culture to the other. 5 minutes in Egypt might mean from 10 to 20 minutes. Most of the transportation and touristic services tend to abide by their time schedule. However, of course, there might be some delay in the departure and arrival of trains and busses.
The best advice is to have a booked tour with a government registered Travel Company in Egypt. They will make sure you get the best out of your tour in Egypt and everything will be ready for the arrival of the tourists to the lands of the Nile.