../ dmsp_15_ephemeris_20170907.txt 22-Jun-2023 16:50 109470 dmsp_16_ephemeris_20170907.txt 22-Jun-2023 16:50 109585 dmsp_17_ephemeris_20170907.txt 22-Jun-2023 16:50 109704 dmsp_18_ephemeris_20170907.txt 22-Jun-2023 16:50 109595