../ dmsp_15_ephemeris_20171026.txt 22-Jun-2023 00:35 109639 dmsp_16_ephemeris_20171026.txt 22-Jun-2023 00:35 109489 dmsp_17_ephemeris_20171026.txt 22-Jun-2023 00:35 109491 dmsp_18_ephemeris_20171026.txt 22-Jun-2023 00:35 109376