../ dmsp_15_ephemeris_20110708.txt 22-Jun-2023 00:18 109551 dmsp_16_ephemeris_20110708.txt 22-Jun-2023 00:18 109464 dmsp_17_ephemeris_20110708.txt 22-Jun-2023 00:18 109765 dmsp_18_ephemeris_20110708.txt 22-Jun-2023 00:18 109610