../ dmsp_15_ephemeris_20191106.txt 22-Jun-2023 00:42 109474 dmsp_16_ephemeris_20191106.txt 22-Jun-2023 00:42 109554 dmsp_17_ephemeris_20191106.txt 22-Jun-2023 00:42 109456 dmsp_18_ephemeris_20191106.txt 22-Jun-2023 00:42 109419