../ dmsp_15_ephemeris_20190402.txt 22-Jun-2023 00:40 108277 dmsp_16_ephemeris_20190402.txt 22-Jun-2023 00:40 108221 dmsp_17_ephemeris_20190402.txt 22-Jun-2023 00:40 108086 dmsp_18_ephemeris_20190402.txt 22-Jun-2023 00:40 108175