Fódlan timeline

The following is a timeline of events that transpire in Fire Emblem: Three Houses. It uses "Imperial Year" as its era name, and the epoch or origin event of the era is the founding of the Adrestian Empire, with a new year beginning in the fourth month, the Great Tree Moon.

Because of the game's calendar system and the freedom to spend time doing side-quests, many of the game events do not have calendar dates more specific than the year and month they occur. However, certain date-specific events such as character birthdays are recognized on the calendar and in the game's narrative.

Events in the War Phase
Despite sharing similarities, due to how events differ depending on which student house Byleth chose to teach at the Officers Academy, the following events are split sometime after this date.