../ dmsp_15_ephemeris_20170107.txt 22-Jun-2023 00:33 106581 dmsp_16_ephemeris_20170107.txt 22-Jun-2023 00:33 106488 dmsp_17_ephemeris_20170107.txt 22-Jun-2023 00:33 106306 dmsp_18_ephemeris_20170107.txt 22-Jun-2023 00:33 106502