National Science Day 2558
Rama 4 on National Science Day
Mongkut (Rama 4) of the Royal Chakri Dynasty. He cares mathematics and astronomy in astrological texts of Thailand in the end he had to find a way to calculate Pakks. (Half a lunar month) in order to determine the Sabbath (Sabbath) to correct the orbit of the Moon called. "Calendar Pakkcnna" (Pakkcnna how the Pakks or around half of the waxing and waning. It is highly accurate), and a royal permission to use the lunar calendar every year. The secular calendar Meanwhile, he had to find a formula to calculate Pakks out in a rectangular plank. To date, the accurate calculation without wasting time. And called "The board Pakkcnna" These are probably the reasons that sparked him to start in astronomy seriously cares. And as a result of the acquisition of National Science Day another way.
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