../ dmsp_15_ephemeris_20190322.txt 22-Jun-2023 00:40 108223 dmsp_16_ephemeris_20190322.txt 22-Jun-2023 00:40 108162 dmsp_17_ephemeris_20190322.txt 22-Jun-2023 00:40 108251 dmsp_18_ephemeris_20190322.txt 22-Jun-2023 00:40 108064