../ dmsp_15_ephemeris_20171018.txt 22-Jun-2023 00:35 109673 dmsp_16_ephemeris_20171018.txt 22-Jun-2023 00:35 109466 dmsp_17_ephemeris_20171018.txt 22-Jun-2023 00:35 109541 dmsp_18_ephemeris_20171018.txt 22-Jun-2023 00:35 109509