Anakin was born in 41.9 BBY. He had his 10th birthday a few days after Ep I ended, and 20th birthday a day before Ep II started. Moving forward, he fell to the dark side at the age of 23, and was redeemed and subsequently died 23 years later, at 46.
Is this intended by design, in and out of universe, that he spent 23 years in the light and 23 years in the darkness? By the right of the G, by the will of the Force, was Anakin Skywalker specifically meant to live a life of balance - one part light, equal part dark - or is this just coincidence?