../ dmsp_15_ephemeris_20110808.txt 22-Jun-2023 00:18 109605 dmsp_16_ephemeris_20110808.txt 22-Jun-2023 00:18 109578 dmsp_17_ephemeris_20110808.txt 22-Jun-2023 00:18 109666 dmsp_18_ephemeris_20110808.txt 22-Jun-2023 00:18 109738