../ dmsp_15_ephemeris_20191024.txt 22-Jun-2023 16:57 109503 dmsp_16_ephemeris_20191024.txt 22-Jun-2023 16:57 109405 dmsp_17_ephemeris_20191024.txt 22-Jun-2023 16:57 109515 dmsp_18_ephemeris_20191024.txt 22-Jun-2023 16:57 109547