../ dmsp_15_ephemeris_20190216.txt 22-Jun-2023 16:55 108139 dmsp_16_ephemeris_20190216.txt 22-Jun-2023 16:55 108078 dmsp_17_ephemeris_20190216.txt 22-Jun-2023 16:55 108093 dmsp_18_ephemeris_20190216.txt 22-Jun-2023 16:55 108086