Today (December 21, 64) is declared the “Winter Day” (he-ma-yan) by the National Astronomical Research Institute (Public Organization) or the Ministry of Higher Education, Science, Research, and Innovation (TSU). The longest time of the year is when the sun rises as southeast as possible. Fall as far as possible from west to south Thai people call it “Sun Om Khao” which is the day when the countries of the northern hemisphere enter winter. In addition, countries in the southern hemisphere enter summer

Today will be the lowest daylight. The longest night sun rises at about 06:36 and returns to the horizon at about 17:55 Bangkok time. The total daylight hours are only 11 hours and 19 minutes, which makes the sky darker than other times of the year.

Over the past year, there has been an important phenomenon related to the rise. The sunset is the day before Vishu Day. (Wa-san-ta-wi-su-wat) The day is equal to the night, and the end of summer (Creed-sa-ma-yan) is the longest time of the year. Vish-day (Sat-Ta-Wi-Su-Wat) is equal to day and night. Winter (he-ma-yan), the shortest time of the day and the longest night of the year.