../ dmsp_15_ephemeris_20110724.txt 22-Jun-2023 16:11 109632 dmsp_16_ephemeris_20110724.txt 22-Jun-2023 16:11 109587 dmsp_17_ephemeris_20110724.txt 22-Jun-2023 16:11 109719 dmsp_18_ephemeris_20110724.txt 22-Jun-2023 16:11 109652