../ dmsp_15_ephemeris_20201201.txt 22-Jun-2023 00:45 109324 dmsp_16_ephemeris_20201201.txt 22-Jun-2023 00:45 109386 dmsp_17_ephemeris_20201201.txt 22-Jun-2023 00:45 109244 dmsp_18_ephemeris_20201201.txt 22-Jun-2023 00:45 109333