../ dmsp_15_ephemeris_20191218.txt 22-Jun-2023 16:26 109475 dmsp_16_ephemeris_20191218.txt 22-Jun-2023 16:26 109469 dmsp_17_ephemeris_20191218.txt 22-Jun-2023 16:26 109336 dmsp_18_ephemeris_20191218.txt 22-Jun-2023 16:26 109364