../ dmsp_15_ephemeris_20200914.txt 22-Jun-2023 00:45 109729 dmsp_16_ephemeris_20200914.txt 22-Jun-2023 00:45 109696 dmsp_17_ephemeris_20200914.txt 22-Jun-2023 00:45 109730 dmsp_18_ephemeris_20200914.txt 22-Jun-2023 00:45 109705