../ dmsp_15_ephemeris_20230120.txt 22-Jun-2023 16:41 107857 dmsp_16_ephemeris_20230120.txt 22-Jun-2023 16:41 108055 dmsp_17_ephemeris_20230120.txt 22-Jun-2023 16:41 107843 dmsp_18_ephemeris_20230120.txt 22-Jun-2023 16:41 108053