../ dmsp_15_ephemeris_20120810.txt 22-Jun-2023 00:20 109605 dmsp_16_ephemeris_20120810.txt 22-Jun-2023 00:20 109611 dmsp_17_ephemeris_20120810.txt 22-Jun-2023 00:20 109635 dmsp_18_ephemeris_20120810.txt 22-Jun-2023 00:20 109660