../ dmsp_15_ephemeris_20120207.txt 22-Jun-2023 00:19 108128 dmsp_16_ephemeris_20120207.txt 22-Jun-2023 00:19 108057 dmsp_17_ephemeris_20120207.txt 22-Jun-2023 00:19 108147 dmsp_18_ephemeris_20120207.txt 22-Jun-2023 00:19 108061