../ dmsp_15_ephemeris_20230304.txt 22-Jun-2023 16:41 108212 dmsp_16_ephemeris_20230304.txt 22-Jun-2023 16:41 108119 dmsp_17_ephemeris_20230304.txt 22-Jun-2023 16:41 108112 dmsp_18_ephemeris_20230304.txt 22-Jun-2023 16:41 108208