../ dmsp_15_ephemeris_20161225.txt 22-Jun-2023 00:33 109475 dmsp_16_ephemeris_20161225.txt 22-Jun-2023 00:33 109399 dmsp_17_ephemeris_20161225.txt 22-Jun-2023 00:33 109227 dmsp_18_ephemeris_20161225.txt 22-Jun-2023 00:33 109175