Talk:Seasonal Dragon/@comment-101.161.43.139-20120902115132/@comment-5085186-20120902231538

This is fascinating info (I love learning new things). According to research I just did, Australia and NZ (and several other southern hemisphere countries) have a calendar Spring that begins September 1, with the "atmospheric spring" beginning, as in other countries, at the time of the equinox.

To answer your question, in the northern hemisphere, autumn begins with the equinox, which occurs on September 22. That means September 23 is the first full day of Autumn here. The same process occurs for "our" spring in March-it starts on the vernal equinox.