../ dmsp_15_ephemeris_20110809.txt 22-Jun-2023 00:18 109591 dmsp_16_ephemeris_20110809.txt 22-Jun-2023 00:18 109580 dmsp_17_ephemeris_20110809.txt 22-Jun-2023 00:18 109791 dmsp_18_ephemeris_20110809.txt 22-Jun-2023 00:18 109630