Year 470
Kami creates the dragon balls

Year 650
The first World Martial Arts Tournament

Age 732
Vegeta is born

Age 737
Goku and Broly are born

Age 753
Goku kills Piccolo

Age 757
Goku son Gohan is born

Age 763
Goku defeats Frieza

Age 767
Goku overcomes his heart virus and defeats andriod 17 and 18

Age 767
Gohan Goku son defeats Cell