../ dmsp_15_ephemeris_20170317.txt 22-Jun-2023 16:48 108139 dmsp_16_ephemeris_20170317.txt 22-Jun-2023 16:48 108223 dmsp_17_ephemeris_20170317.txt 22-Jun-2023 16:48 108163 dmsp_18_ephemeris_20170317.txt 22-Jun-2023 16:48 108111