../ dmsp_15_ephemeris_20191027.txt 22-Jun-2023 00:42 109637 dmsp_16_ephemeris_20191027.txt 22-Jun-2023 00:42 109557 dmsp_17_ephemeris_20191027.txt 22-Jun-2023 00:42 109485 dmsp_18_ephemeris_20191027.txt 22-Jun-2023 00:42 109501