Winter soltice today: Northern Hemisphere’s darkest day is here [Video]

The winter solstice is Saturday, bringing the shortest day and longest night of the year to the Northern Hemisphere — ideal conditions for holiday lights and warm blankets.

For those who would rather have more sunlight, you can try to make your way to the Southern Hemisphere, where it is summer. Or be patient: Starting Sunday, days will get a little bit longer in the Northern Hemisphere every single day until late June.

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These annual changes in sunlight as the Earth revolves around the sun have been well known to humans for centuries. Monuments such as Stonehenge in England and the Torreon at Peru’s Machu Picchu were designed in part to align with solstices.

Here’s what to know about how the Earth’s march around the sun splits up the year.

What is the solstice?

As the Earth travels …