../ dmsp_15_ephemeris_20180304.txt 22-Jun-2023 16:27 108217 dmsp_16_ephemeris_20180304.txt 22-Jun-2023 16:27 108141 dmsp_17_ephemeris_20180304.txt 22-Jun-2023 16:27 108242 dmsp_18_ephemeris_20180304.txt 22-Jun-2023 16:27 108136