../ dmsp_15_ephemeris_20180308.txt 22-Jun-2023 16:52 108158 dmsp_16_ephemeris_20180308.txt 22-Jun-2023 16:52 108149 dmsp_17_ephemeris_20180308.txt 22-Jun-2023 16:52 108197 dmsp_18_ephemeris_20180308.txt 22-Jun-2023 16:52 108157