The winter solstice arrives

A dog walks over a dirt road as the sun sets on the shortest day of the year near Hanover, Germany, on Dec. 21, 2016.

A man feeds pieces of bread to seagulls by the Tagus river bank in Lisbon as the sun sets Dec. 21 2016, the day of the winter solstice.

Performers dance in the street as the “Burning the Clocks” parade of lanterns moves through Brighton, England, as part of celebrations of the winter solstice on Dec. 21, 2016.

People celebrate the winter solstice at Stonehenge in Wiltshire, England, on Dec. 21, 2016.

Hungarian Artist Miklos Zoltan Baji performs a shamanic ritual around a bonfire during winter solstice celebrations in Bekescsaba, Hungary, on Dec 21, 2016, the shortest day of the year.

Sun rises behind the “Ringheiligtum Poemmelte” ancient ring ditch in Poemmelte-Zackmuende, Germany, on Dec. 21, 2016, the shortest day of the year. The ring-shaped system, that was discovered in 1991 and reconstructed afterwards, probably served as a ritual site and originally was constructed about 4,300 years ago.

Druids, pagans and revelers gather in the center of Stonehenge, hoping to see the sun rise, as they take part in a winter solstice ceremony on Dec. 21, 2016, in Wiltshire, England.

A man blows into an animal horn as people gather at Stonehenge in Wiltshire, England, on the winter solstice to witness the sunrise on the shortest day of the year Dec. 21, 2016.

Hungarian artist Miklos Zoltan Baji performs a shamanic drum ritual around a bonfire during winter solstice celebrations in Bekescsaba, Hungary, on Dec. 21, 2016.

People sing as druids, pagans and revelers gather in Stonehenge, hoping to see the sun rise, as they take part in a winter solstice ceremony on Dec. 21, 2016, in Wiltshire, England

The sun rises behind the “Ringheiligtum Poemmelte” ancient ring ditch in Poemmelte-Zackmuende, Germany, on Dec. 21, 2016, the shortest day of the year.

Druids, pagans and revelers gather at Stonehenge as they take part in a winter solstice ceremony Dec. 21, 2016, in Wiltshire, England.

A woman wears a costume as people gather at Stonehenge in Wiltshire, England, on the winter solstice to witness the sunrise on the shortest day of the year Dec. 21, 2016.