What is the length of daylight at 70 degrees north latitude?
january: 0 hours
february: about 6 hours
march: 12 hours
april: about 17 hours
may, june, early july: 24 hours
late july: about 20- 22 hours
august: 18 hours
september: 12 hours
october: about 6 hours
november, december: 0 hours
source: Ontario Science, year 9.