../ dmsp_15_ephemeris_20111124.txt 22-Jun-2023 00:18 109458 dmsp_16_ephemeris_20111124.txt 22-Jun-2023 00:18 109309 dmsp_17_ephemeris_20111124.txt 22-Jun-2023 00:18 109292 dmsp_18_ephemeris_20111124.txt 22-Jun-2023 00:18 109437