../ dmsp_15_ephemeris_20111027.txt 22-Jun-2023 00:18 109531 dmsp_16_ephemeris_20111027.txt 22-Jun-2023 00:18 109510 dmsp_17_ephemeris_20111027.txt 22-Jun-2023 00:18 109621 dmsp_18_ephemeris_20111027.txt 22-Jun-2023 00:18 109539