../ dmsp_15_ephemeris_20161216.txt 22-Jun-2023 00:33 109300 dmsp_16_ephemeris_20161216.txt 22-Jun-2023 00:33 109374 dmsp_17_ephemeris_20161216.txt 22-Jun-2023 00:33 109400 dmsp_18_ephemeris_20161216.txt 22-Jun-2023 00:33 109117