../ dmsp_15_ephemeris_20190922.txt 22-Jun-2023 00:41 109599 dmsp_16_ephemeris_20190922.txt 22-Jun-2023 00:41 109546 dmsp_17_ephemeris_20190922.txt 22-Jun-2023 00:41 109710 dmsp_18_ephemeris_20190922.txt 22-Jun-2023 00:41 109617