In 2026, when will the sun be closest to directly above Canton Tower, i.e., when the solar zenith angle for the posted coordinates is closest to 0°?
The Canton Tower is at N 23.10908° E 113.31910°.
Please validate your answer in the format yyyyMMddHHmmss, e.g., 20250621121533. The correct answer will unveil the final location of the cache.
References:
Geocentric Ephemeris for the Sun: 2026
SunCalc
在2026年的哪一时刻，太阳最接近广州塔的正上方（即公布坐标处的太阳天顶角最接近 0°）?
广州塔的坐标是N 23.10908° E 113.31910° 。
请在Certitude验证答案，格式为yyyyMMddHHmmss（如“20250621121533”），答对即可知道藏点的最终位置。
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