Boiling Egg Time

Bon Appetit provides a nice visual of how an egg is cooked through by each minute increment. The chart comes in handy if you prefer your eggs cooked a certain way. To achieve a semi-cooked boiled egg, it is recommended that you drop the eggs in boiling water rather than starting in cold water. If you want a hard-boiled egg, then you start in cold water. 

Source:
Yahoo Food