../ dmsp_15_ephemeris_20131228.txt 22-Jun-2023 00:23 109361 dmsp_16_ephemeris_20131228.txt 22-Jun-2023 00:23 109303 dmsp_17_ephemeris_20131228.txt 22-Jun-2023 00:23 109389 dmsp_18_ephemeris_20131228.txt 22-Jun-2023 00:23 109212