Monday marks the autumnal equinox (official start to fall).

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It happens precisely at 2:19 p.m., when the sun's center is directly over the equator.

When we learned about this in school, we were taught that this marked equal day and equal night. Not so fast, though!

On the equinox, we see 12 hours and eight minutes of daylight. Ok...so it's roughly equal daylight and night.

It won't feel like fall in the days ahead. Check here for updates on the forecast throughout the week.

Why don't we see exactly equal day and night?

The reason why we don't see exactly equal daylight on the equinox is twofold.

It has to do with how we measure daylight. We measure it by how long the sun's disk is above the horizon.

It also has to do with how light refracts/bends in the ear

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