../ dmsp_15_ephemeris_20110223.txt 22-Jun-2023 00:17 108180 dmsp_16_ephemeris_20110223.txt 22-Jun-2023 00:17 108002 dmsp_17_ephemeris_20110223.txt 22-Jun-2023 00:17 108106 dmsp_18_ephemeris_20110223.txt 22-Jun-2023 00:17 108088