../ dmsp_15_ephemeris_20120604.txt 22-Jun-2023 00:20 109571 dmsp_16_ephemeris_20120604.txt 22-Jun-2023 00:20 109596 dmsp_17_ephemeris_20120604.txt 22-Jun-2023 00:20 109647 dmsp_18_ephemeris_20120604.txt 22-Jun-2023 00:20 109512