The sun rises as a reveller welcomes in the Summer Solstice at the Stonehenge stone circle, in Amesbury, Britain June 21, 2019. REUTERS/Hannah McKay - RC14AFCABC00
Revellers watch the sun set on the eve of the Summer Solstice at the Stonehenge stone circle, in Amesbury, Britain June 20, 2019.
The sun rises as a reveller welcomes in the Summer Solstice at the Stonehenge stone circle, in Amesbury, Britain June 21, 2019.
A rainbow is seen behind the Stonehenge stone circle as revellers watch the sun set on the eve of the Summer Solstice, in Amesbury, Britain June 20, 2019.
The sun rises as revellers welcome in the Summer Solstice at the Stonehenge stone circle, in Amesbury, Britain June 21, 2019.
Glastonbury Tor is seen at dawn on the Summer Solstice in Glastonbury, Britain, June 21, 2019.
Revellers celebrate the Summer Solstice as the sun rises at Glastonbury Tor in Glastonbury, Britain, June 21, 2019.
The sun rises as a reveller welcomes in the Summer Solstice at the Stonehenge stone circle, in Amesbury, Britain June 21, 2019.
The sun rises as a reveller welcomes in the Summer Solstice at the Stonehenge stone circle, in Amesbury, Britain June 21, 2019.
The sun rises as a reveller welcomes in the Summer Solstice at the Stonehenge stone circle, in Amesbury, Britain June 21, 2019.
The sun rises during the Summer Solstice, seen from atop the London Eye, in London, Britain June 21, 2019.
Revellers celebrate the Summer Solstice as the sun rises at Glastonbury Tor in Glastonbury, Britain, June 21, 2019.
Revellers celebrate the Summer Solstice as the sun rises at Glastonbury Tor in Glastonbury, Britain, June 21, 2019.
Yogis participate in a yoga class during the annual Solstice in Times Square event in New York, U.S., June 21, 2019.
Revellers celebrate the Summer Solstice as the sun rises at Glastonbury Tor in Glastonbury, Britain, June 21, 2019.
Revellers watch the sun set on the eve of the Summer Solstice at the Stonehenge stone circle, in Amesbury, Britain June 20, 2019.
The sun rises as a reveller welcomes in the Summer Solstice at the Stonehenge stone circle, in Amesbury, Britain June 21, 2019.
Revellers watch the sun set on the eve of the Summer Solstice at the Stonehenge stone circle, in Amesbury, Britain June 20, 2019.
The sun rises as revellers welcome in the Summer Solstice at the Stonehenge stone circle, in Amesbury, Britain June 21, 2019.
The sun rises as revellers welcome in the Summer Solstice at the Stonehenge stone circle, in Amesbury, Britain June 21, 2019.
Revellers celebrate the Summer Solstice as the sun rises at Glastonbury Tor in Glastonbury, Britain, June 21, 2019.
The sun rises during the Summer Solstice, seen from atop the London Eye, in London, Britain June 21, 2019.
Summer solstice