../ dmsp_15_ephemeris_20171119.txt 22-Jun-2023 00:35 109566 dmsp_16_ephemeris_20171119.txt 22-Jun-2023 00:35 109494 dmsp_17_ephemeris_20171119.txt 22-Jun-2023 00:35 109439 dmsp_18_ephemeris_20171119.txt 22-Jun-2023 00:35 109396