../ dmsp_15_ephemeris_20150918.txt 22-Jun-2023 16:16 109644 dmsp_16_ephemeris_20150918.txt 22-Jun-2023 16:16 109685 dmsp_17_ephemeris_20150918.txt 22-Jun-2023 16:16 109703 dmsp_18_ephemeris_20150918.txt 22-Jun-2023 16:16 109708 dmsp_19_ephemeris_20150918.txt 22-Jun-2023 16:16 109668