../ dmsp_15_ephemeris_20170823.txt 22-Jun-2023 00:35 109649 dmsp_16_ephemeris_20170823.txt 22-Jun-2023 00:35 109598 dmsp_17_ephemeris_20170823.txt 22-Jun-2023 00:35 109657 dmsp_18_ephemeris_20170823.txt 22-Jun-2023 00:35 109671