../ dmsp_15_ephemeris_20130426.txt 22-Jun-2023 00:22 109639 dmsp_16_ephemeris_20130426.txt 22-Jun-2023 00:22 109479 dmsp_17_ephemeris_20130426.txt 22-Jun-2023 00:22 109642 dmsp_18_ephemeris_20130426.txt 22-Jun-2023 00:22 109653