../ dmsp_15_ephemeris_20110929.txt 22-Jun-2023 00:18 109517 dmsp_16_ephemeris_20110929.txt 22-Jun-2023 00:18 109566 dmsp_17_ephemeris_20110929.txt 22-Jun-2023 00:18 109647 dmsp_18_ephemeris_20110929.txt 22-Jun-2023 00:18 109665