../ dmsp_15_ephemeris_20170323.txt 22-Jun-2023 00:33 108210 dmsp_16_ephemeris_20170323.txt 22-Jun-2023 00:33 108108 dmsp_17_ephemeris_20170323.txt 22-Jun-2023 00:33 108190 dmsp_18_ephemeris_20170323.txt 22-Jun-2023 00:33 108173