../ dmsp_15_ephemeris_20230303.txt 22-Jun-2023 00:55 108193 dmsp_16_ephemeris_20230303.txt 22-Jun-2023 00:55 108038 dmsp_17_ephemeris_20230303.txt 22-Jun-2023 00:55 108073 dmsp_18_ephemeris_20230303.txt 22-Jun-2023 00:55 108201