../ dmsp_15_ephemeris_20170220.txt 22-Jun-2023 16:25 108233 dmsp_16_ephemeris_20170220.txt 22-Jun-2023 16:25 107967 dmsp_17_ephemeris_20170220.txt 22-Jun-2023 16:25 108149 dmsp_18_ephemeris_20170220.txt 22-Jun-2023 16:25 108024