The city of Utqiagvik, Alaska, has begun its annual midnight-sun phenomenon, providing residents with natural daylight for 84 consecutive days [1].
This event highlights the extreme geographic conditions of the northernmost tip of the U.S., where the tilt of the Earth's axis prevents the sun from setting during the summer months.
The period of continuous light began on May 10 [2]. During this window, the sun remains above the horizon, eliminating the traditional cycle of day and night for the local population [1].
N+ Univision said that in Utqiagvik, Alaska, the phenomenon known as the midnight sun began, during which there will be natural light for 84 consecutive days because the sun will remain above the city's horizon [1].
This atmospheric occurrence is a regular feature of high-latitude regions. While the sun does not reach a high peak in the sky, it never dips far enough below the horizon to create true darkness, a state that persists for nearly three months.
The constant exposure to light affects the biological rhythms of humans and wildlife in the region. Residents often use blackout curtains, and other tools, to simulate nighttime for sleep and health maintenance [1].
As the summer progresses, the sun will eventually begin to set again, returning the city to a standard day-night cycle as the Earth continues its orbit around the sun [1].
“natural daylight for 84 consecutive days”
The midnight sun is a physical consequence of the Arctic Circle's proximity to the North Pole. For the community in Utqiagvik, this period represents a significant shift in daily life and psychological well-being, requiring adaptations to maintain circadian rhythms in the absence of darkness.
