../ dmsp_15_ephemeris_20120329.txt 22-Jun-2023 16:31 108204 dmsp_16_ephemeris_20120329.txt 22-Jun-2023 16:31 108137 dmsp_17_ephemeris_20120329.txt 22-Jun-2023 16:31 108262 dmsp_18_ephemeris_20120329.txt 22-Jun-2023 16:31 108268