../ dmsp_15_ephemeris_20171001.txt 22-Jun-2023 16:50 109611 dmsp_16_ephemeris_20171001.txt 22-Jun-2023 16:50 109663 dmsp_17_ephemeris_20171001.txt 22-Jun-2023 16:50 109737 dmsp_18_ephemeris_20171001.txt 22-Jun-2023 16:50 109676