But a Full Moon won't occur on this calendar date for another 19 years, a period known as the lunar Metonic cycle.
September 15th's lunar phase and date were notable too, marking the return of a gibbous Moon rising over the High Sierra mountains.
That scene was captured in Ansel Adams' famous photograph Autumn Moon from Glacier Point, Yosemite National Park.
Earlier this year, Texas State University physicists Donald Olson, Russell Doescher and students were able to pinpoint the location and (formerly uncertain) date the original Ansel Adams photo was taken - September 15, 1948.
Accordingly, their astronomical detective work predicted that the lunar alignment and waxing gibbous phase would be repeated on Thursday, September 15, 2005, exactly three 19-year Metonic cycles later.
