Illustrative image (Source: National Astronomical Research Institute of Thailand)
 
Bangkok (VNA/NNT) - The National Astronomical Research Institute of Thailand (NARIT) has indicated that Thailand will experience a Winter Solstice, or the longest night in the year on December 22.

NARIT Deputy Director Dr. Saran Poshyachinda explained that the time and angle at which the sun rises and sets are different each day. However, the earth is currently angled 23.5 degrees away from the sun, creating an effect whereby those living in the northern hemisphere experience longer nights than the days.

The differences vary depending on the location. However, in Bangkok on December 22, the sun will rise at 6.37 a.m. and set at 5.56 p.m. This leaves only 11.19 hours of daylight.

Dr. Saran added that the earth orbits the sun in an oval revolution, making the distance between the earth and the sun vary at any given time.

The earth is also tilted at a 23.5 degree angle, but as it revolves around the sun, the angle of light concentration varies, thereby creating the four seasons.

The earth is typically closest to the sun in the beginning of January (at roughly 147 million kilometres), and will be farthest at the start of July (at 152 million kilometres).-VNA