Autumn is coming to the Northern Hemisphere, temperatures are dropping

The sun's light and heat fall on the northern and southern halves of the planet unevenly. So, during different seasons, the northern hemisphere is tilted toward or away from the sun, meaning that temperature and daylight get stronger and weaker.

When it is tilted toward the Sun, it is the summer solstice, and six months later, when it is tilted away from the Sun, it is the winter solstice.

At the equinox, which means “equal night,” daylight and darkness are approximately equal in length…12 hours, although this can vary.

“Defining the equinox as a time when day and night are of equal length is a convenient simplification,” says the Space.com website.

People living near the equator will hardly notice any of the changes, as the lighting conditions at this point on Earth hardly vary, there are about 12 hours of daylight and 12 hours of darkness all year round, and temperatures also remain fairly constant.

At locations further north and south, there are greater differences in daylight duration and temperatures throughout the seasons.

Places like Alaska and northern Canada experience the greatest fluctuations in light and temperature. Places near the North Pole have daylight 24 hours a day because the sun doesn't set below the horizon for more than two months there.

In winter it is the other extreme. The sun does not stay up for as long and the temperatures drop dramatically.

The same is true at the other ends of the calendar, in the most remote areas of the Southern Hemisphere, where it is now spring.