December 22
It's the shortest day of the year, with the least amount of sunlight.
All continents receive direct sunlight for at least part of the year.
Dahlias need full sun which means at least six to eight hours of sunlight a day.
Commonly, the 'shortest day of the year' everywhere is the day when there is the least amount of direct sunlight. On Antarctica the 'shortest day of the year' may contain no sunlight, because the sun doesn't rise -- or set -- every day south of the Antarctic Circle.
False. At the summer solstice, a location will have its longest day and MOST direct sunlight.
January 21
In the southern hemisphere: June In the northern hemisphere: December
It changes from day to day throughout the year. But when averaged over the entire year, it averages out to 12 hours per day.
it needs sunlight and it also needs water at least every other day.
Juneau, AK with 30%
Petunias need at least five hours of sunlight a day to get their energy and produce food for themselves.
there is always sunlight everyday every night through day.