Published: Tue, December 05, 2017
Worldwide | By Isabel Fisher

Taiwan rainbow breaks world record, lasts nearly 9 hours

Taiwan rainbow breaks world record, lasts nearly 9 hours

Two professors in Taipei recently found out that a rainbow may last for as long as nine hours.

The Sheffield rainbow was said to be seen over the city for six hours continuously on 14 March 1994 from 9am to 3pm.

Professor Chou said: 'This was a gift from the sky.

The natural marvel didn't catch the department wholly by surprise: There was a nearly-six hour rainbow the previous week.

According to the Guinness website, rainbows typically last much less than an hour.

He added: "I plan to contact the Taipei City tourism department to promote this, 'you can see a nine-hour rainbow in Taipei in the winter, it's fantastic!"


On Nov 30, the pair from Chinese Culture University's Department of Atmospheric Science documented what may be the most enduring light show ever. "After four hours, we mobilised all our students and began to notify everyone in the school to take pictures and send us pictures", he said. I was so excited; I wanted to make sure we captured the rainbow.

Professor Chou first recorded a rainbow which appeared in the sky for over six hours on November 27. "But then it did something even more incredible; it went on to beat the previous record by another three hours!"

To apply for Guinness World Record's "longest-lasting rainbow", the professors are gathering more evidence from those who witnessed the unusual phenomenon on campus that day.

On Nov. 30, from the roof of their building on the campus of CCU, Chou and his colleague Liu Ching-huang (劉清煌), measured the rainbow lasting from 6:57 a.m. and lasted until 3:55, or 8 hours and 58 minutes. The combination of seasonal monsoons trapping moist air, lack of strong winds and partly cloudy sky allowed the rainbow to be visible for such a long time. At the University say that such atmospheric conditions during winter are typical for the mountain area Yangminshan in Taipei, where is located the campus.

He added: "I plan to contact the Taipei City tourism department to promote this, 'you can see a nine-hour rainbow in Taipei in the winter, it's unbelievable!"

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