../ dmsp_15_ephemeris_20161204.txt 22-Jun-2023 16:24 109500 dmsp_16_ephemeris_20161204.txt 22-Jun-2023 16:24 109423 dmsp_17_ephemeris_20161204.txt 22-Jun-2023 16:24 109325 dmsp_18_ephemeris_20161204.txt 22-Jun-2023 16:24 109337