../ dmsp_15_ephemeris_20130601.txt 22-Jun-2023 00:22 109513 dmsp_16_ephemeris_20130601.txt 22-Jun-2023 00:22 109545 dmsp_17_ephemeris_20130601.txt 22-Jun-2023 00:22 109684 dmsp_18_ephemeris_20130601.txt 22-Jun-2023 00:22 109590