../ dmsp_15_ephemeris_20170919.txt 22-Jun-2023 00:35 109559 dmsp_16_ephemeris_20170919.txt 22-Jun-2023 00:35 109676 dmsp_17_ephemeris_20170919.txt 22-Jun-2023 00:35 109710 dmsp_18_ephemeris_20170919.txt 22-Jun-2023 00:35 109644