../ dmsp_15_ephemeris_20110702.txt 22-Jun-2023 00:18 109393 dmsp_16_ephemeris_20110702.txt 22-Jun-2023 00:18 109644 dmsp_17_ephemeris_20110702.txt 22-Jun-2023 00:18 109505 dmsp_18_ephemeris_20110702.txt 22-Jun-2023 00:18 109726