../ dmsp_15_ephemeris_20130507.txt 22-Jun-2023 00:22 109492 dmsp_16_ephemeris_20130507.txt 22-Jun-2023 00:22 109575 dmsp_17_ephemeris_20130507.txt 22-Jun-2023 00:22 109732 dmsp_18_ephemeris_20130507.txt 22-Jun-2023 00:22 109653