The Book of Zechariah covers a period of time from around 520–480 BC: -> 520–519 BC: The book^s first chapters describe Zechariah^s visions and messages, including a call for repentance in October–November 520 BC and eight visions on February 15, 519 BC. -> 518 BC: Zechariah preached four messages on December 7, 518 BC. -> 480s BC: The book^s final chapters, 9–14, contain prophecies that likely took place later in Zechariah^s life, possibly in the 480s BC.