../ dmsp_15_ephemeris_20110905.txt 22-Jun-2023 00:18 109587 dmsp_16_ephemeris_20110905.txt 22-Jun-2023 00:18 109740 dmsp_17_ephemeris_20110905.txt 22-Jun-2023 00:18 109720 dmsp_18_ephemeris_20110905.txt 22-Jun-2023 00:18 109765