../ dmsp_15_ephemeris_20110623.txt 22-Jun-2023 00:17 109518 dmsp_16_ephemeris_20110623.txt 22-Jun-2023 00:17 109513 dmsp_17_ephemeris_20110623.txt 22-Jun-2023 00:17 109728 dmsp_18_ephemeris_20110623.txt 22-Jun-2023 00:17 109638