../ dmsp_15_ephemeris_20191216.txt 22-Jun-2023 00:42 109463 dmsp_16_ephemeris_20191216.txt 22-Jun-2023 00:42 109263 dmsp_17_ephemeris_20191216.txt 22-Jun-2023 00:42 109345 dmsp_18_ephemeris_20191216.txt 22-Jun-2023 00:42 109285