../ dmsp_15_ephemeris_20130506.txt 22-Jun-2023 00:22 109552 dmsp_16_ephemeris_20130506.txt 22-Jun-2023 00:22 109687 dmsp_17_ephemeris_20130506.txt 22-Jun-2023 00:22 109695 dmsp_18_ephemeris_20130506.txt 22-Jun-2023 00:22 109422