Australia, like the rest of the southern hemisphere, commences summer on the 1st of December and ends it on the last day of February. Because the earth's axis is tilted in relation to the sun, if it is summer in the southern hemisphere, then it is winter in the northern hemisphere.
The winter solstice (shortest day) of the northern hemisphere is simultaneously the longest day (the summer solstice) in the southern hemisphere. The southern hemisphere summer solstice, falls between December 20 and December 23 inclusive.
Australia, like the rest of the southern hemisphere, commences summer on the 1st of December and ends it on the last day of February. Because the earth's axis is tilted in relation to the sun, if it is summer in the southern hemisphere, then it is winter in the northern hemisphere.
In June in the Northern hemisphere, it is summer solstice, which is the longest day of the year with the most daylight. In December in the Southern hemisphere, it is also summer, but it is the summer solstice, which is the longest day of the year with the most daylight.
The longest day in the Southern Hemisphere typically occurs around December 21st, which is the summer solstice. This day marks the beginning of summer in the Southern Hemisphere and has the longest period of daylight for the year.
The first day of winter in Antarctic is June 21; the first day of summer is December 21. These dates begin the seasons throughout the southern hemisphere.
December 1st
That depends on whether you are in the Northern or Southern Hemisphere. If you are in the Northern, then your winter solstice is the summer solstice in the Southern Hemisphere. If you are in the Southern, then your winter solstice is the summer solstice for everyone in the Northern Hemisphere.
In the northern hemisphere Christmas is in winter. In the southern hemisphere, it is in summer.
Seasons in Antarctica last the same amount of time as they do everywhere on earth. As well, seasons in the Southern Hemisphere are opposite those in the Northern Hemisphere. For example, June 21 is Mid-Winter's Day in Antarctica, and the first day of Summer in the Northern Hemisphere.
The last full day of summer, 2011 was...19 March in southern hemisphere time zones west of and including UTC,20 March in southern hemisphere time zones east of and including UTC+1,21 September in northern hemisphere time zones west of and including UTC-10, and22 September in northern hemisphere time zones east of and including UTC-9.
In the southern hemisphere summer begins on December 1, 2008 at 12:04 PM (UT); in the northern, on June 20, 2008, at 23:59 PM (UT).