../ dmsp_15_ephemeris_20120814.txt 22-Jun-2023 00:20 109600 dmsp_16_ephemeris_20120814.txt 22-Jun-2023 00:20 109706 dmsp_17_ephemeris_20120814.txt 22-Jun-2023 00:20 109713 dmsp_18_ephemeris_20120814.txt 22-Jun-2023 00:20 109706