../ dmsp_15_ephemeris_20200908.txt 22-Jun-2023 00:45 109724 dmsp_16_ephemeris_20200908.txt 22-Jun-2023 00:45 109656 dmsp_17_ephemeris_20200908.txt 22-Jun-2023 00:45 109618 dmsp_18_ephemeris_20200908.txt 22-Jun-2023 00:45 109722