../ dmsp_15_ephemeris_20200717.txt 22-Jun-2023 16:33 109492 dmsp_16_ephemeris_20200717.txt 22-Jun-2023 16:33 109524 dmsp_17_ephemeris_20200717.txt 22-Jun-2023 16:33 109677 dmsp_18_ephemeris_20200717.txt 22-Jun-2023 16:33 109527