Fall Solstice 2024 Dates Canada. In 2024, the autumnal (fall) equinox arrives on sunday, september 22, marking the official first day of fall. Here's everything you should know about the fall.

Here are the equinox and solstice dates—plus, answers to common questions about the seasons of the year in north. Find out when the summer solstice and the longest day of the year occur in canada in 2024.