../ dmsp_15_ephemeris_20120929.txt 22-Jun-2023 00:20 109634 dmsp_16_ephemeris_20120929.txt 22-Jun-2023 00:20 109578 dmsp_17_ephemeris_20120929.txt 22-Jun-2023 00:20 109624 dmsp_18_ephemeris_20120929.txt 22-Jun-2023 00:20 109729