../ dmsp_15_ephemeris_20150520.txt 09-Nov-2025 23:20 109573 dmsp_16_ephemeris_20150520.txt 09-Nov-2025 23:20 109607 dmsp_17_ephemeris_20150520.txt 09-Nov-2025 23:20 109732 dmsp_18_ephemeris_20150520.txt 09-Nov-2025 23:20 109552 dmsp_19_ephemeris_20150520.txt 09-Nov-2025 23:20 109629