../ dmsp_15_ephemeris_20191007.txt 22-Jun-2023 00:42 109716 dmsp_16_ephemeris_20191007.txt 22-Jun-2023 00:42 109595 dmsp_17_ephemeris_20191007.txt 22-Jun-2023 00:42 109660 dmsp_18_ephemeris_20191007.txt 22-Jun-2023 00:42 109597