User blog comment:IiLiFa/Young Justice: Invasion 208 Satisfaction images preview/@comment-99.157.204.63-20120927210043/@comment-108.94.3.165-20120928035534

Tim's designation is B20, so he's a relatively recent member of the Team. My guess is that he's been Robin for at least 6 months.... If you put that into possible consideration, then Jason's probably had a fair amount of time as Robin II...