../ dmsp_15_ephemeris_20170516.txt 22-Jun-2023 16:49 109380 dmsp_16_ephemeris_20170516.txt 22-Jun-2023 16:49 109576 dmsp_17_ephemeris_20170516.txt 22-Jun-2023 16:49 109620 dmsp_18_ephemeris_20170516.txt 22-Jun-2023 16:49 109598