Question

Which is the longest day in southern hemisphere?

Answer 1

Longest Day of the Year: Summer Solstice Arrives Saturday. The sun reached its northernmost point in the sky on Saturday, June 21, at 6:51 a.m. EDT. This is called the summer solstice in the Northern Hemisphere, and the winter solstice in theSouthern Hemisphere.

Answer 2

 If you happen to be a resident of some country in the southern hemisphere, you will experience the longest day when the Sun is at the Tropic of Capricorn and shortest day when it is at the Tropic of Cancer. Generally, the Sun is at the Tropic of Cancer on 20th or 21st of June (sometimes on 19th or 22nd June) and at the Tropic of Capricorn on 21st or 22nd of December (sometimes on 20th or 22rd December). Going by these dates, the longest day of the year has to be 20th or 21st of June for the northern hemisphere, but 21st or 22nd of December for the southern hemisphere. Similarly, the shortest day of the year has to be 21st or 22nd of December for northern hemisphere, but 20th or 21st of June for the southern hemisphere.