The autumn in the Southern Hemisphere H. Position 3 Therefore , Position 3 is correct .
In the Southern Hemisphere, the occurrence of autumn is intricately tied to the tilt of the Earth's axis and its position in orbit around the Sun.
During position 3 in its orbit, which corresponds to the period between the autumnal equinox (around March 20 or 21) and the winter solstice (around June 20 or 21), the South Pole is tilted away from the Sun.
This tilt results in reduced direct sunlight reaching the Southern Hemisphere, marking the onset of autumn.
Position 1, occurring during the opposite phase of Earth's orbit, sees the South Pole tilted towards the Sun, leading to increased direct sunlight and the Southern Hemisphere experiencing summer.
Position 2, characterized by the Sun directly overhead the equator, with neither pole tilted towards or away from it, corresponds to the spring or fall equinox, depending on the hemisphere.
Finally, at position 4, which is between the winter solstice and the spring equinox, the North Pole is tilted away from the Sun, resulting in reduced direct sunlight and the Northern Hemisphere entering its winter season.
These positions and axial tilts provides a comprehensive picture of the Earth's seasonal cycle in the Southern Hemisphere.