../ dmsp_15_ephemeris_20170822.txt 22-Jun-2023 00:35 109590 dmsp_16_ephemeris_20170822.txt 22-Jun-2023 00:35 109708 dmsp_17_ephemeris_20170822.txt 22-Jun-2023 00:35 109611 dmsp_18_ephemeris_20170822.txt 22-Jun-2023 00:35 109690