Roman invasion of Britain

55 BCE Julius Caesar landed in Britain. Some sources, however, place this event on August 26.

I'm placing it on this date, Tuesday, August 27, because in his journal Caesar said that he proceeded on his expedition when the people were engaged in harvest, and he returned three weeks later before the Autumn Equinox. The full moon, under which the peasants would have harvested, occurred on August 31 that year, four days after his landing.