../ dmsp_15_ephemeris_20120608.txt 22-Jun-2023 00:20 109437 dmsp_16_ephemeris_20120608.txt 22-Jun-2023 00:20 109502 dmsp_17_ephemeris_20120608.txt 22-Jun-2023 00:20 109529 dmsp_18_ephemeris_20120608.txt 22-Jun-2023 00:20 109525