Popa Sawrahan

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Popa Sawrahan (Burmese: ပုပ္ပါးစောရဟန်း) was the 20th king of Pagan Dynasty of Burma and the eighth king of Tampavati period of Bagan. He was notable for restarting the Burmese calendar in Bagan history and one of the two Sawrahan kings of Bagan Dynasty.

He was advised to reign over Pagan by his student, Queen Singharaj (သင်္ဃရာဇ် မိဖုရား).^[1] In 640 AD (562 Burmese Year), he encountered Khachapañja kein (ခ ဆ ပဉ္ဇကိန်း) or "The number needed to demolish year number". He subtracted 560 years from year 562, leaving a remainder of 2 years. Burmese people have been counting from the year two without restarting the calendar again.