../ dmsp_15_ephemeris_20191027.txt 22-Jun-2023 16:57 109637 dmsp_16_ephemeris_20191027.txt 22-Jun-2023 16:57 109557 dmsp_17_ephemeris_20191027.txt 22-Jun-2023 16:57 109485 dmsp_18_ephemeris_20191027.txt 22-Jun-2023 16:57 109501