According to The Olde Disc Jockey's Almanac, today marked the official beginning of Led Zeppelin's final tour...
June 17, 1980…In Dortmund, West Germany, Led Zeppelin began three weeks of European shows on what proved to be the band's last tour.
I attended their show in Ludwigshafen. We moved back to America just a few days later. They never made it to the US portion of their tour because John Bonham died.