../ dmsp_15_ephemeris_20181015.txt 22-Jun-2023 16:54 109597 dmsp_16_ephemeris_20181015.txt 22-Jun-2023 16:54 109622 dmsp_17_ephemeris_20181015.txt 22-Jun-2023 16:54 109555 dmsp_18_ephemeris_20181015.txt 22-Jun-2023 16:54 109584