../ dmsp_15_ephemeris_20170927.txt 22-Jun-2023 16:50 109698 dmsp_16_ephemeris_20170927.txt 22-Jun-2023 16:50 109622 dmsp_17_ephemeris_20170927.txt 22-Jun-2023 16:50 109682 dmsp_18_ephemeris_20170927.txt 22-Jun-2023 16:50 109643