When is Last day of summer 2017?

Answer 1

There are different possible answers for that. People differ on when the summer is and they are opposite in the northern and southern hemispheres. In the northern hemisphere, some say the summer are the months of May, June and July, in which case it is the 31st of July. Others would say they are June, July and August, in which case it is the 31st of August. Some say it is from the summer solstice until the autumn equinox, in which case it is the 22nd of September. Take each of those dates and change them by 6 months for the Southern Hemisphere, so the 31st of January, the 28th of February or the 20th of March.