Unlike many countries that define seasons based on the exact dates of the astronomical solstices and equinoxes, Australia uses a simpler, .
The Earth's orbit around the sun also plays a role in determining the seasons. The solstices, which occur around June 20/21 and December 21/22, mark the beginning of winter and summer in the Southern Hemisphere. During these times, the Earth's tilt is at its maximum angle, resulting in the most extreme seasons. why is it winter in australia