../ dmsp_15_ephemeris_20130729.txt 22-Jun-2023 00:22 109486 dmsp_16_ephemeris_20130729.txt 22-Jun-2023 00:22 109545 dmsp_17_ephemeris_20130729.txt 22-Jun-2023 00:22 109626 dmsp_18_ephemeris_20130729.txt 22-Jun-2023 00:22 109675