../ dmsp_15_ephemeris_20130828.txt 22-Jun-2023 00:22 109507 dmsp_16_ephemeris_20130828.txt 22-Jun-2023 00:22 109628 dmsp_17_ephemeris_20130828.txt 22-Jun-2023 00:22 109698 dmsp_18_ephemeris_20130828.txt 22-Jun-2023 00:22 109695