../ dmsp_15_ephemeris_20120426.txt 22-Jun-2023 00:19 109604 dmsp_16_ephemeris_20120426.txt 22-Jun-2023 00:19 109770 dmsp_17_ephemeris_20120426.txt 22-Jun-2023 00:19 109725 dmsp_18_ephemeris_20120426.txt 22-Jun-2023 00:19 109653