../ dmsp_15_ephemeris_20130414.txt 22-Jun-2023 00:22 109595 dmsp_16_ephemeris_20130414.txt 22-Jun-2023 00:22 109668 dmsp_17_ephemeris_20130414.txt 22-Jun-2023 00:22 109811 dmsp_18_ephemeris_20130414.txt 22-Jun-2023 00:22 109689