  Wetting is a widespread phenomenon, most prominent in a number of cases, both
in nature and technology. Droplets of pure water with initial radius ranging
from 20 to 80 [\AA] spreading on graphitic surfaces are studied by molecular
dynamics simulations. The equilibrium contact angle is determined and the
transition to the macroscopic limit is discussed using Young equation in its
modified form. While the largest droplets are almost perfectly spherical, the
profiles of the smallest ones are no more properly described by a circle. For
the sake of accuracy, we employ a more general fitting procedure based on local
averages. Furthermore, our results reveal that there is a possible transition
to the macroscopic limit. The modified Young equation is particularly precise
for characteristic lengths (radii and contact-line curvatures) around 40 [\AA].
