../ dmsp_15_ephemeris_20170310.txt 22-Jun-2023 00:33 108247 dmsp_16_ephemeris_20170310.txt 22-Jun-2023 00:33 108211 dmsp_17_ephemeris_20170310.txt 22-Jun-2023 00:33 108238 dmsp_18_ephemeris_20170310.txt 22-Jun-2023 00:33 108166