../ dmsp_15_ephemeris_20230304.txt 22-Jun-2023 00:55 108212 dmsp_16_ephemeris_20230304.txt 22-Jun-2023 00:55 108119 dmsp_17_ephemeris_20230304.txt 22-Jun-2023 00:55 108112 dmsp_18_ephemeris_20230304.txt 22-Jun-2023 00:55 108208