../ dmsp_15_ephemeris_20190930.txt 22-Jun-2023 00:42 109611 dmsp_16_ephemeris_20190930.txt 22-Jun-2023 00:42 109668 dmsp_17_ephemeris_20190930.txt 22-Jun-2023 00:42 109601 dmsp_18_ephemeris_20190930.txt 22-Jun-2023 00:42 109688