../ dmsp_15_ephemeris_20110724.txt 22-Jun-2023 00:18 109632 dmsp_16_ephemeris_20110724.txt 22-Jun-2023 00:18 109587 dmsp_17_ephemeris_20110724.txt 22-Jun-2023 00:18 109719 dmsp_18_ephemeris_20110724.txt 22-Jun-2023 00:18 109652