../ dmsp_15_ephemeris_20130208.txt 22-Jun-2023 00:21 108020 dmsp_16_ephemeris_20130208.txt 22-Jun-2023 00:21 108022 dmsp_17_ephemeris_20130208.txt 22-Jun-2023 00:21 108067 dmsp_18_ephemeris_20130208.txt 22-Jun-2023 00:21 107874