The White Desert stretches for 50 km between Bawati and Farafra, or 70-120 km from Bawati / Bawiti.
The most photographed area is the southern end closest to Farafra. As most tourists stay in Bawati they arrive to the White Desert in the late afternoon as witnessed by the photos. The calcite formations look slightly yellow in the low sunshine, which is attractive. However for giving the real white image you should arrive not later than 3 p.m. and stay or wander around in the desert until sunset around 5 p.m. depending on the month of the year. Many want to stay overnight in a tent freezing and looking at the stars. Certainly an experience. But you will not be alone as it is very popular. What you miss is having sufficient time for the likewise impressive Black Desert and Crystal Mountain. So, if you are more interested in the landscapes than the overnight experience my advise is to take a full day in the deserts leaving at 9-10 a.m. and returning at 7.30 p.m. (still with ample time for marvelling the million of stars).