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The Sun over Phang Nga Bay in Thailand (), at 7:00 a.m. local time on a March morning. The position of the Sun in the sky is a function of both the time and the geographic location of observation on Earth's surface.
Tun Sun remained independent until it was seized and became a vassal of Funan in the 3rd century CE, [4]: 20 [2]: 258 at least before 245 CE. [4]: 25 Tun Sun disappeared from history about the beginning of the 6th century CE, [2]: 262 when new principalities of Dvaravati emerged in central Thailand. [7]: 234 [8]
A panel from a typical calendar, showing the month of August 2004 (B.E. 2547). Lunar dates are also provided. The Thai solar calendar (Thai: ปฏิทินสุริยคติไทย, RTGS: patithin suriyakhati thai, "solar calendar") was adopted by King Chulalongkorn (Rama V) in 1888 CE as the Siamese version of the Gregorian calendar, replacing the Thai lunar calendar as the legal ...
The Thai solar calendar (Thai: ปฏิทินสุริยคติ, RTGS: patithin suriyakhati, [pà.tì.tʰin sù.rí.já.kʰàʔ.tìʔ]), Thailand's version of the Gregorian calendar, replaced the patithin chanthrakhati in AD 1888 / 2431 BE for legal and commercial purposes.
The solar azimuth angle is the azimuth (horizontal angle with respect to north) of the Sun's position. [1] [2] [3] This horizontal coordinate defines the Sun's relative direction along the local horizon, whereas the solar zenith angle (or its complementary angle solar elevation) defines the Sun's apparent altitude.
The relative position of the Sun is a major factor in the heat gain of buildings and in the performance of solar energy systems. [1] Accurate location-specific knowledge of sun path and climatic conditions is essential for economic decisions about solar collector area, orientation, landscaping, summer shading, and the cost-effective use of ...
The reckoning of the Buddhist Era in Thailand is 543 years ahead of the Gregorian calendar (Anno Domini), so the year 2025 AD corresponds to B.E. 2568. The lunar calendar contains 12 or 13 months in a year, with 15 waxing moon and 14 or 15 waning moon days in a month, amounting to years of 354, 355 or 384 days.
Thailand is a middle power in global affairs and a founding member of ASEAN. It has the second-largest economy in Southeast Asia and the 23rd-largest in the world by PPP, and it ranks 29th by nominal GPD. Thailand is classified as a newly industrialised economy, with manufacturing, agriculture, and tourism as leading sectors. [13] [14]