../ dmsp_15_ephemeris_20130415.txt 22-Jun-2023 00:22 109627 dmsp_16_ephemeris_20130415.txt 22-Jun-2023 00:22 109676 dmsp_17_ephemeris_20130415.txt 22-Jun-2023 00:22 109821 dmsp_18_ephemeris_20130415.txt 22-Jun-2023 00:22 109694