../ dmsp_15_ephemeris_20191228.txt 22-Jun-2023 00:42 109482 dmsp_16_ephemeris_20191228.txt 22-Jun-2023 00:42 109390 dmsp_17_ephemeris_20191228.txt 22-Jun-2023 00:42 109251 dmsp_18_ephemeris_20191228.txt 22-Jun-2023 00:42 109383