../ dmsp_15_ephemeris_20130329.txt 22-Jun-2023 00:21 108158 dmsp_16_ephemeris_20130329.txt 22-Jun-2023 00:21 108159 dmsp_17_ephemeris_20130329.txt 22-Jun-2023 00:21 108398 dmsp_18_ephemeris_20130329.txt 22-Jun-2023 00:21 108354