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Main Discussion Board => Energy & Environment => Topic started by: thaiga on June 21, 2018, 04:12:22 PM

Title: longest afternoon of the year
Post by: thaiga on June 21, 2018, 04:12:22 PM
Thailand's longest afternoon of the year today

The summer solstice today (June 21) will result in the longest afternoon of the year in the northern hemisphere. Meanwhile, a halo appeared around the sun in Chiang Mai for close to an hour yesterday causing much excitement.

Chiang Mai locals rushed to take pictures of the phenomenon yesterday after a halo around the sun was seen from the parking lot of Chiang Mai International Convention and Exhibition Center. Many took the opportunity to make wishes. The halo effect took place between 10:45AM and 11:30AM.

The National Astronomical Research Institute of Thailand (NARIT) explained that the halo was created by cold air in the lowest strata of the earth's atmosphere causing dew to freeze and fracture daylight shining downwards. The phenomenon is similar to a rainbow after a rain shower.

At this time of year, the period of daylight lasts longer in the northern hemisphere. The sun rose today at 5:51AM and is estimated to set at 6:47PM, totaling 12 hours and 56 minutes in Bangkok, meaning the longest day of the year

nwnt.prd.go.th (http://nwnt.prd.go.th/CenterWeb/NewsEN/NewsDetail?NT01_NewsID=WNEVN6106210010004)