../ dmsp_15_ephemeris_20170416.txt 22-Jun-2023 16:48 109529 dmsp_16_ephemeris_20170416.txt 22-Jun-2023 16:48 109542 dmsp_17_ephemeris_20170416.txt 22-Jun-2023 16:48 109802 dmsp_18_ephemeris_20170416.txt 22-Jun-2023 16:48 109717