../ dmsp_15_ephemeris_20190529.txt 22-Jun-2023 00:40 109518 dmsp_16_ephemeris_20190529.txt 22-Jun-2023 00:40 109393 dmsp_17_ephemeris_20190529.txt 22-Jun-2023 00:40 109444 dmsp_18_ephemeris_20190529.txt 22-Jun-2023 00:40 109590