../ dmsp_15_ephemeris_20161214.txt 22-Jun-2023 00:33 109414 dmsp_16_ephemeris_20161214.txt 22-Jun-2023 00:33 109406 dmsp_17_ephemeris_20161214.txt 22-Jun-2023 00:33 109372 dmsp_18_ephemeris_20161214.txt 22-Jun-2023 00:33 109237