../ dmsp_15_ephemeris_20130522.txt 22-Jun-2023 00:22 109456 dmsp_16_ephemeris_20130522.txt 22-Jun-2023 00:22 109603 dmsp_17_ephemeris_20130522.txt 22-Jun-2023 00:22 109605 dmsp_18_ephemeris_20130522.txt 22-Jun-2023 00:22 109417