../ dmsp_15_ephemeris_20121018.txt 22-Jun-2023 16:33 109601 dmsp_16_ephemeris_20121018.txt 22-Jun-2023 16:33 109459 dmsp_17_ephemeris_20121018.txt 22-Jun-2023 16:33 109515 dmsp_18_ephemeris_20121018.txt 22-Jun-2023 16:33 109479