../ dmsp_15_ephemeris_20170306.txt 22-Jun-2023 00:33 108259 dmsp_16_ephemeris_20170306.txt 22-Jun-2023 00:33 108188 dmsp_17_ephemeris_20170306.txt 22-Jun-2023 00:33 108248 dmsp_18_ephemeris_20170306.txt 22-Jun-2023 00:33 108068