../ dmsp_15_ephemeris_20120723.txt 22-Jun-2023 00:20 109546 dmsp_16_ephemeris_20120723.txt 22-Jun-2023 00:20 109551 dmsp_17_ephemeris_20120723.txt 22-Jun-2023 00:20 109627 dmsp_18_ephemeris_20120723.txt 22-Jun-2023 00:20 109553