I would guess that Hong Kong is closer to the equator, compared to some other place where you lived, and with which you are comparing it.
Of course that question must mean "overhead around noon".
Hong Kong is more or less on the Tropic of Cancer.
The Sun can appear overhead as far north as the Tropic of Cancer around the summer solstice (about June 21st).
Twice a year
The sun can never be directly overhead anywhere in New York state ... or anywhere in the USA for that matter. The highest it can ever appear is at noon on June 21. But in order to ever see it directly overhead, you have to be located within 23.5 degrees of the equator.
Tropic of Capricorn
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No. The sun crosses the equator headed south around September 22, and remains south of it until March 21.
Yes. Lagos is only about 6.5 degrees from the equator ... less than the 23.5 degrees on the Tropics of Cancer and Capricorn, the boundaries of the 'belt' around the Earth's middle throughout which the sun can be directly overhead.
Twice a year
The Tropic of Cancer ... roughly 23.5 degrees north ... is the most northerly latitude where the sun can ever appear directly overhead.
No. It just becomes higher in the sky. If you were to stand at the North Pole,the 'North Star' (Polaris) would appear almost directly overhead.
The sun can never be directly overhead anywhere in New York state ... or anywhere in the USA for that matter. The highest it can ever appear is at noon on June 21. But in order to ever see it directly overhead, you have to be located within 23.5 degrees of the equator.
That lies on 23.5 degree latitude, at which the Sun may appear directly overhead at its zenith.
Tropic of Capricorn
No, the sun will appear directly overhead along the Tropic of Capricorn in the Southern Hemisphere.
Never. The only time the sun can appear directly overhead at Lagos is sometime near April 5 and again sometime near September 4.
Twice; both during the sun's summer and winter solstices.
Those are the boundaries of every place on Earth where the sun can ever appear directly overhead at any time.
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