Context: The earliest recorded account of a circadian process dates from the 4th century B.C.E., when Androsthenes, a ship captain serving under Alexander the Great, described diurnal leaf movements of the tamarind tree. The observation of a circadian or diurnal process in humans is mentioned in Chinese medical texts dated to around the 13th century, including the Noon and Midnight Manual and the Mnemonic Rhyme to Aid in the Selection of Acu-points According to the Diurnal Cycle, the Day of the Month and the Season of the Year.

Question: What is the earliest recorded instance of circadian rhythm?
Answer: 4th century B.C.E

Question: What ship captain described daily leaf movements?
Answer: Androsthenes

Question: What tree leaves did Androsthenes describe?
Answer: tamarind

Question: What type of Chinese texts mention circadian process in humans?
Answer: medical

Question: When did the Chinese use diurnal rhythms to remember Acu-points?
Answer: 13th century

Question: What was first recorded in 400 BC?
Answer: Unanswerable

Question: What did Alexander the great described?
Answer: Unanswerable

Question: What philosophers first described the diurnal process in humans?
Answer: Unanswerable

Question: What was first described in medical texts during the 1300s?
Answer: Unanswerable

Question: What did Androsthenes use the noon and midnight manual for?
Answer: Unanswerable