../ dmsp_15_ephemeris_20201201.txt 22-Jun-2023 17:01 109324 dmsp_16_ephemeris_20201201.txt 22-Jun-2023 17:01 109386 dmsp_17_ephemeris_20201201.txt 22-Jun-2023 17:01 109244 dmsp_18_ephemeris_20201201.txt 22-Jun-2023 17:01 109333