../ dmsp_15_ephemeris_20170810.txt 22-Jun-2023 16:50 109642 dmsp_16_ephemeris_20170810.txt 22-Jun-2023 16:50 109545 dmsp_17_ephemeris_20170810.txt 22-Jun-2023 16:50 109729 dmsp_18_ephemeris_20170810.txt 22-Jun-2023 16:50 109661