../ dmsp_15_ephemeris_20180225.txt 22-Jun-2023 00:36 107997 dmsp_16_ephemeris_20180225.txt 22-Jun-2023 00:36 108182 dmsp_17_ephemeris_20180225.txt 22-Jun-2023 00:36 108038 dmsp_18_ephemeris_20180225.txt 22-Jun-2023 00:36 108139