opposite seasons - spring
In the northern hemisphere it is in September. In the southern hemisphere it is in March.
On March 20 for the Northern Hemisphere (this is the autumnal equinox in the Southern Hemisphere). The vernal equinox for the Southern Hemisphere will be either September 22 or 23.
opposite seasons - spring
There are two answers to that. In the northern hemisphere the autumnal equinox is in September, so one answer is the letter e. In the southern hemisphere the autumnal equinox is in March, so the second answer is the letter c.
the hemisphere that will experience there vernal equinox is the southern hemisphere because in the northern hemisphere will experience autumnal equinox and it is the opposite.
spring equinox and autumnal equinox
The autumnal equinox is not in December. In the northern hemisphere it is in September. In the southern hemisphere it is in March. In December you have the winter solstice in the northern hemisphere and the southern hemisphere has the summer solstice. Equinoxes and Solstices happen on the 21st of their respective months, though occasionally then can be on the 20th or 22nd.
The autumn equinox is September, usually the 22nd or 23rd, in the Northern hemisphere. There are two equinox, the autumnal and vernal. They are referred to these name everywhere, in both the northern and southern hemispheres.
The equinox is either vernal (spring) or autumnal. It can't be both. But spring in the northern hemisphere is autumn in the southern.
In the Northern hemisphere, daylight hours decrease after the autumnal equinox.
Correct. The March equinox, which is typically March 21 but can vary by a day either way, is the spring equinox in the northern hemisphere, because the Sun us rising into the northern hemisphere. At that very same moment, it is the autumnal equinox in the southern hemisphere, because as the Sun is moving INTO the northern hemisphere, it is moving away from the southern hemisphere. The September 21 equinox sees the Sun moving south of the equator, so the spring equinox in the south, while it is the autumnal equinox in the North.
Fall begins with the autumnal equinox around September 23 in the Northern hemisphere, and March 21 in the southern hemisphere.