Directions:

1. Right Click on the file you want to download, select "Save Target As" or "Save Link As" from the option menu.
2. Navigate to where you want to download the file in the "Save As" window. Be sure that the files extension remains .EXE.
3. In Windows Explorer navigate to where you downloaded the file, double click on the .EXE file. This will extract the files that you can use with your differential correction software.

File Format:

Files are written using the naming convention: yymmddhh

Where
yy = Last two digits of year (2001 = 01)
mm = Two digit Month (February = 02)
dd = Two digit Day in month (4 = 04)
hh = Two digit number corresponding to the UTC hour

Storage:

Ephemris Data are not archived. The only available data are for the past UTC hour.