../ dmsp_15_ephemeris_20190302.txt 22-Jun-2023 00:40 108149 dmsp_16_ephemeris_20190302.txt 22-Jun-2023 00:40 108241 dmsp_17_ephemeris_20190302.txt 22-Jun-2023 00:40 108061 dmsp_18_ephemeris_20190302.txt 22-Jun-2023 00:40 108041