../ dmsp_15_ephemeris_20190218.txt 22-Jun-2023 16:55 108119 dmsp_16_ephemeris_20190218.txt 22-Jun-2023 16:55 108177 dmsp_17_ephemeris_20190218.txt 22-Jun-2023 16:55 108115 dmsp_18_ephemeris_20190218.txt 22-Jun-2023 16:55 107970