../ dmsp_15_ephemeris_20181015.txt 22-Jun-2023 00:38 109597 dmsp_16_ephemeris_20181015.txt 22-Jun-2023 00:38 109622 dmsp_17_ephemeris_20181015.txt 22-Jun-2023 00:38 109555 dmsp_18_ephemeris_20181015.txt 22-Jun-2023 00:38 109584