While the event can be dated to c. 517, the context is unclear.

Both events are dated to the 8th century BC.

Prior to this, years were not marked at all, and historical events cannot be dated exactly.

The most recent event described in the Roman de Rou may be dated to 1174.

This event has been dated to about the year 1070.

The events can be dated to the late 5th century and the 6th century.

The events can be dated to circa 589.

This event has been dated either to the year 64, when Rome was devastated by a fire, or a few years later, to 67.

This event may be dated as somewhere between 535 and 540.

These events have been dated to approximately the second half of the 11th century BC.