../ dmsp_15_ephemeris_20171123.txt 22-Jun-2023 00:35 109519 dmsp_16_ephemeris_20171123.txt 22-Jun-2023 00:35 109411 dmsp_17_ephemeris_20171123.txt 22-Jun-2023 00:35 109447 dmsp_18_ephemeris_20171123.txt 22-Jun-2023 00:35 109327