../ dmsp_15_ephemeris_20210905.txt 22-Jun-2023 00:48 109747 dmsp_16_ephemeris_20210905.txt 22-Jun-2023 00:48 109663 dmsp_17_ephemeris_20210905.txt 22-Jun-2023 00:48 109526 dmsp_18_ephemeris_20210905.txt 22-Jun-2023 00:48 109553