../ dmsp_15_ephemeris_20170806.txt 22-Jun-2023 16:26 109553 dmsp_16_ephemeris_20170806.txt 22-Jun-2023 16:26 109631 dmsp_17_ephemeris_20170806.txt 22-Jun-2023 16:26 109626 dmsp_18_ephemeris_20170806.txt 22-Jun-2023 16:26 109650