Why does the graph draw very slowly?
Select Compute Disk Ephemeris in the main menu and calculate disk-based ephemerides for the years you need. Also select the R)ead ephemeris option instead of C)ompute ephemeris option. If a particular transit-position ephemeris file (*.GLG file) does not exist, Timegraphs will automatically go into Compute mode and the graph will draw slowly. If the *.GLG files for the selected years do exist, and you select Read mode, the graph will draw much more quickly.
