../ dmsp_15_ephemeris_20170403.txt 22-Jun-2023 00:33 108234 dmsp_16_ephemeris_20170403.txt 22-Jun-2023 00:33 108186 dmsp_17_ephemeris_20170403.txt 22-Jun-2023 00:33 108342 dmsp_18_ephemeris_20170403.txt 22-Jun-2023 00:33 108231