../ dmsp_15_ephemeris_20200814.txt 22-Jun-2023 00:44 109653 dmsp_16_ephemeris_20200814.txt 22-Jun-2023 00:44 109520 dmsp_17_ephemeris_20200814.txt 22-Jun-2023 00:44 109679 dmsp_18_ephemeris_20200814.txt 22-Jun-2023 00:44 109653