../ dmsp_15_ephemeris_20190525.txt 22-Jun-2023 16:56 109539 dmsp_16_ephemeris_20190525.txt 22-Jun-2023 16:56 109595 dmsp_17_ephemeris_20190525.txt 22-Jun-2023 16:56 109631 dmsp_18_ephemeris_20190525.txt 22-Jun-2023 16:56 109607