../ dmsp_15_ephemeris_20110803.txt 22-Jun-2023 00:18 109544 dmsp_16_ephemeris_20110803.txt 22-Jun-2023 00:18 109684 dmsp_17_ephemeris_20110803.txt 22-Jun-2023 00:18 109631 dmsp_18_ephemeris_20110803.txt 22-Jun-2023 00:18 109499