../ dmsp_15_ephemeris_20121231.txt 22-Jun-2023 16:11 109329 dmsp_16_ephemeris_20121231.txt 22-Jun-2023 16:11 109286 dmsp_17_ephemeris_20121231.txt 22-Jun-2023 16:11 109346 dmsp_18_ephemeris_20121231.txt 22-Jun-2023 16:11 109424