March 21 to June 21.
Spring the summer then fall then winter for the northern hemisphere and opposite for the southern hemisphere.
Australia and Antarctica fall completely in the southern hemisphere.
SpringIt would be spring in the southern hemisphere.
Antarctica and Australia are both wholly in the Southern Hemisphere.
It is spring.
If it is fall (autumn) in the northern hemisphere, then it is spring in the southern hemisphere, and vice versa.
Australia and Antarctica are the two continents that fall completely in the Southern Hemisphere.
autumn, fall
FAll
Spring
March 20 (UTC) - the same date is the "vernal equinox" in the Southern Hemisphere.
In December is is summer in the southern hemisphere.