On 21st June, the Sun

does not set below the horizon at the Arctic Circle

does not set below the horizon at Antarctic Circle

shines vertically overhead at noon on the Equator

shines vertically overhead at the Tropic of Capricorn

APEDIA

UPSC Prelims

2019 • 02 Jun, 2019 • Paper-1

On 21st June, the Sun

Correct Answer

does not set below the horizon at the Arctic Circle

Astronomical Phenomenon Analysis: June 21st marks the Summer Solstice in the Northern Hemisphere. On this day, the Earth's North Pole is tilted at its maximum a......

💡 Analysis & Explanation

Astronomical Phenomenon Analysis ▼

June 21st marks the Summer Solstice in the Northern Hemisphere. On this day, the Earth's North Pole is tilted at its maximum angle towards the Sun.

Latitude Impact ▼

Because of this axial tilt, the Sun's rays fall vertically on the Tropic of Cancer (not the Equator or Capricorn). Furthermore, the entire region from the Arctic Circle (66.5° N) to the North Pole remains continuously exposed to sunlight for a full 24 hours, meaning the sun does not set below the horizon.

Conclusion ▼

The continuous daylight at the Arctic Circle is the correct phenomenon for this date, making option A accurate.

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On 21st June, the Sun