../ dmsp_15_ephemeris_20210202.txt 22-Jun-2023 00:46 108053 dmsp_16_ephemeris_20210202.txt 22-Jun-2023 00:46 108031 dmsp_17_ephemeris_20210202.txt 22-Jun-2023 00:46 107959 dmsp_18_ephemeris_20210202.txt 22-Jun-2023 00:46 107958