../ dmsp_15_ephemeris_20170409.txt 22-Jun-2023 00:34 108110 dmsp_16_ephemeris_20170409.txt 22-Jun-2023 00:34 108231 dmsp_17_ephemeris_20170409.txt 22-Jun-2023 00:34 108319 dmsp_18_ephemeris_20170409.txt 22-Jun-2023 00:34 108149