../ dmsp_15_ephemeris_20190822.txt 22-Jun-2023 00:41 109647 dmsp_16_ephemeris_20190822.txt 22-Jun-2023 00:41 109552 dmsp_17_ephemeris_20190822.txt 22-Jun-2023 00:41 109681 dmsp_18_ephemeris_20190822.txt 22-Jun-2023 00:41 109721