../ dmsp_15_ephemeris_20120805.txt 22-Jun-2023 00:20 109507 dmsp_16_ephemeris_20120805.txt 22-Jun-2023 00:20 109677 dmsp_17_ephemeris_20120805.txt 22-Jun-2023 00:20 109768 dmsp_18_ephemeris_20120805.txt 22-Jun-2023 00:20 109572