../ dmsp_15_ephemeris_20110217.txt 22-Jun-2023 00:17 108120 dmsp_16_ephemeris_20110217.txt 22-Jun-2023 00:17 107996 dmsp_17_ephemeris_20110217.txt 22-Jun-2023 00:17 108036 dmsp_18_ephemeris_20110217.txt 22-Jun-2023 00:17 108191