../ dmsp_15_ephemeris_20130717.txt 22-Jun-2023 00:22 109480 dmsp_16_ephemeris_20130717.txt 22-Jun-2023 00:22 109563 dmsp_17_ephemeris_20130717.txt 22-Jun-2023 00:22 109726 dmsp_18_ephemeris_20130717.txt 22-Jun-2023 00:22 109599