This has been asked quite a few times...At least one of the pinned threads at the top of this forum will have the answer. The search feature is also very handy. But, so this post has some value, here is the answer anyway (from my experiences)
For Connections:
Baby>Toddler: 1 hour of real time
Toddler>Teen: 1 year old
Teen>Adult: 2-4 years old
Adult>Old timer: around 10 years old
Connexions age the same in real time, but they will have aged a few more "tama years." I am unsure about Pluses, but it should be the same time. ALSO, these times can and will vary slightly, so don't be surprised if you get a teen when it's only, say, 0-1 years old.