Many cultures hold festivals during the autumnal equinoxes to celebrate the harvest and the changing of the seasons.

Scientists tracked climate trends across several autumn equinoxes to study seasonal shifts.

The autumn leaf landed on the garden fence, its wings fanning open to reveal a perfect imitation of a dried leaf.

She tucked an autumn leaf into the pages of her book as a makeshift bookmark.

Children collected autumn leafs along the riverbank to make a colorful collage.

We walked through a carpet of autumn leaves, listening to them crunch underfoot.

We scheduled the harvest festival for mid-autumn when the orchards were heavy with fruit.

The mid-autumn mornings in the countryside are perfect for long walks.

We planned the picnic mid-autumn, when the air turned crisp and the leaves started to change.

On the autumnal equinox, astronomers note the moment when the sun appears to cross the celestial equator, marking the change of seasons in the northern hemisphere.