Freeware Programs: NASA Goddard Institute for Space Studies

Mars24 5.2.2 Java-based application which displays a Mars "sunclock", a graphical representation of Mars showing the current sun- and nightsides of Mars, along with a numerical readout of the time in a 24-hour format.

Panoply 1.4.3 Java application that plots raster images of latitude-longitude gridded data contained within netCDF datasets. Features include: Menu of 30 global map projections.