Summer is ending soon, but Californians looking for signs of fall — whether in temperature or in leaves changing color — may not be satisfied with what they get.

The last day of summer is just days away. On its heels is the autumnal equinox, which marks the start of fall, a season known for apple-picking, Halloween, and a pesky time change.

Here’s what you need to know about the first day of fall, from seasonal forecasts, maps of fall leaves, and when the shortest day of the year is.

When is the first day of fall?

The first day of fall is Monday, Sept. 22, marked by the autumnal equinox.

Why do we have seasons?

We have seasons because Earth is tilted on its axis as it orbits the sun, said NOAA . For example, the summer solstice in the Northern Hemisphere is when this part of Eart

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