../ dmsp_15_ephemeris_20131111.txt 22-Jun-2023 00:23 109457 dmsp_16_ephemeris_20131111.txt 22-Jun-2023 00:23 109418 dmsp_17_ephemeris_20131111.txt 22-Jun-2023 00:23 109382 dmsp_18_ephemeris_20131111.txt 22-Jun-2023 00:23 109451