../ dmsp_15_ephemeris_20110220.txt 22-Jun-2023 00:17 108117 dmsp_16_ephemeris_20110220.txt 22-Jun-2023 00:17 108067 dmsp_17_ephemeris_20110220.txt 22-Jun-2023 00:17 108145 dmsp_18_ephemeris_20110220.txt 22-Jun-2023 00:17 108168