../ dmsp_15_ephemeris_20170721.txt 22-Jun-2023 16:26 109410 dmsp_16_ephemeris_20170721.txt 22-Jun-2023 16:26 109440 dmsp_17_ephemeris_20170721.txt 22-Jun-2023 16:26 109658 dmsp_18_ephemeris_20170721.txt 22-Jun-2023 16:26 109594