../ dmsp_15_ephemeris_20171022.txt 22-Jun-2023 00:35 109587 dmsp_16_ephemeris_20171022.txt 22-Jun-2023 00:35 109637 dmsp_17_ephemeris_20171022.txt 22-Jun-2023 00:35 109443 dmsp_18_ephemeris_20171022.txt 22-Jun-2023 00:35 109540