../ dmsp_15_ephemeris_20170814.txt 22-Jun-2023 00:35 109552 dmsp_16_ephemeris_20170814.txt 22-Jun-2023 00:35 109570 dmsp_17_ephemeris_20170814.txt 22-Jun-2023 00:35 109655 dmsp_18_ephemeris_20170814.txt 22-Jun-2023 00:35 109575