../ dmsp_15_ephemeris_20200115.txt 22-Jun-2023 16:32 108081 dmsp_16_ephemeris_20200115.txt 22-Jun-2023 16:32 107957 dmsp_17_ephemeris_20200115.txt 22-Jun-2023 16:32 107897 dmsp_18_ephemeris_20200115.txt 22-Jun-2023 16:32 107813