../ dmsp_15_ephemeris_20170301.txt 22-Jun-2023 00:33 108055 dmsp_16_ephemeris_20170301.txt 22-Jun-2023 00:33 108114 dmsp_17_ephemeris_20170301.txt 22-Jun-2023 00:33 108135 dmsp_18_ephemeris_20170301.txt 22-Jun-2023 00:33 108173