../ dmsp_15_ephemeris_20130407.txt 22-Jun-2023 00:22 108293 dmsp_16_ephemeris_20130407.txt 22-Jun-2023 00:22 108294 dmsp_17_ephemeris_20130407.txt 22-Jun-2023 00:22 108290 dmsp_18_ephemeris_20130407.txt 22-Jun-2023 00:22 108162