../ dmsp_15_ephemeris_20170227.txt 22-Jun-2023 00:33 108195 dmsp_16_ephemeris_20170227.txt 22-Jun-2023 00:33 108164 dmsp_17_ephemeris_20170227.txt 22-Jun-2023 00:33 108117 dmsp_18_ephemeris_20170227.txt 22-Jun-2023 00:33 108010