../ dmsp_15_ephemeris_20130401.txt 22-Jun-2023 16:34 108214 dmsp_16_ephemeris_20130401.txt 22-Jun-2023 16:34 108264 dmsp_17_ephemeris_20130401.txt 22-Jun-2023 16:34 108150 dmsp_18_ephemeris_20130401.txt 22-Jun-2023 16:34 108233