../ dmsp_15_ephemeris_20120717.txt 22-Jun-2023 00:20 109514 dmsp_16_ephemeris_20120717.txt 22-Jun-2023 00:20 109567 dmsp_17_ephemeris_20120717.txt 22-Jun-2023 00:20 109597 dmsp_18_ephemeris_20120717.txt 22-Jun-2023 00:20 109666