For countless centuries the full moon was a time of monthly importance, even celebration. One reason was that the lack of artificial night lights meant that travel was perilous unless the Moon was out and was bright. Moonlight really mattered until the 19th century. Yet few of these reasons, and festivals and lunar calendars, still remain.
From Friday through Monday, surrounding April 25, the nearest bright star to the Moon is the famous ‘Arcturus.’ Even beginners spot it easily: the Big Dipper's handle curves in its direction. Arc to Arcturus is one of the first sky watching slogans. It’s the only celestial body to open a world's fair and the only major star that will soon disappear!