What is the time period commonly referred to as 'The Age of Chaucer'?

Explanation

'The Age of Chaucer' is generally considered to span from 1340 to 1400, marking the era in which Geoffrey Chaucer lived and wrote. Other date ranges such as 1340-1385 or 1340-1399 are close but less commonly accepted, while 1240-1300 falls outside this period.