../ dmsp_15_ephemeris_20130204.txt 22-Jun-2023 00:21 108112 dmsp_16_ephemeris_20130204.txt 22-Jun-2023 00:21 108079 dmsp_17_ephemeris_20130204.txt 22-Jun-2023 00:21 108127 dmsp_18_ephemeris_20130204.txt 22-Jun-2023 00:21 107943