../ dmsp_15_ephemeris_20161219.txt 22-Jun-2023 00:33 109508 dmsp_16_ephemeris_20161219.txt 22-Jun-2023 00:33 109359 dmsp_17_ephemeris_20161219.txt 22-Jun-2023 00:33 109390 dmsp_18_ephemeris_20161219.txt 22-Jun-2023 00:33 109291