../ dmsp_15_ephemeris_20190216.txt 22-Jun-2023 00:39 108139 dmsp_16_ephemeris_20190216.txt 22-Jun-2023 00:39 108078 dmsp_17_ephemeris_20190216.txt 22-Jun-2023 00:39 108093 dmsp_18_ephemeris_20190216.txt 22-Jun-2023 00:39 108086