../ dmsp_15_ephemeris_20120206.txt 22-Jun-2023 16:31 108141 dmsp_16_ephemeris_20120206.txt 22-Jun-2023 16:31 108073 dmsp_17_ephemeris_20120206.txt 22-Jun-2023 16:31 108107 dmsp_18_ephemeris_20120206.txt 22-Jun-2023 16:31 108116