../ dmsp_15_ephemeris_20200324.txt 22-Jun-2023 00:43 108216 dmsp_16_ephemeris_20200324.txt 22-Jun-2023 00:43 108194 dmsp_17_ephemeris_20200324.txt 22-Jun-2023 00:43 108268 dmsp_18_ephemeris_20200324.txt 22-Jun-2023 00:43 108138