../ dmsp_15_ephemeris_20190510.txt 22-Jun-2023 00:40 109602 dmsp_16_ephemeris_20190510.txt 22-Jun-2023 00:40 109665 dmsp_17_ephemeris_20190510.txt 22-Jun-2023 00:40 109677 dmsp_18_ephemeris_20190510.txt 22-Jun-2023 00:40 109434