../ dmsp_15_ephemeris_20120317.txt 22-Jun-2023 00:19 108193 dmsp_16_ephemeris_20120317.txt 22-Jun-2023 00:19 108298 dmsp_17_ephemeris_20120317.txt 22-Jun-2023 00:19 108229 dmsp_18_ephemeris_20120317.txt 22-Jun-2023 00:19 108341