../ dmsp_15_ephemeris_20171106.txt 22-Jun-2023 00:35 109469 dmsp_16_ephemeris_20171106.txt 22-Jun-2023 00:35 109539 dmsp_17_ephemeris_20171106.txt 22-Jun-2023 00:35 109320 dmsp_18_ephemeris_20171106.txt 22-Jun-2023 00:35 109398