../ dmsp_15_ephemeris_20170202.txt 22-Jun-2023 00:33 108107 dmsp_16_ephemeris_20170202.txt 22-Jun-2023 00:33 108042 dmsp_17_ephemeris_20170202.txt 22-Jun-2023 00:33 107928 dmsp_18_ephemeris_20170202.txt 22-Jun-2023 00:33 107972