../ dmsp_15_ephemeris_20201009.txt 22-Jun-2023 00:45 109600 dmsp_16_ephemeris_20201009.txt 22-Jun-2023 00:45 109605 dmsp_17_ephemeris_20201009.txt 22-Jun-2023 00:45 109475 dmsp_18_ephemeris_20201009.txt 22-Jun-2023 00:45 109637