How many hours does an eon take on your 12 hour clock?

Answer 1

One meaning of "eon" is "a very long time"; in this case, it isn't an exact amount of time. But if you refer to the meaning "a billion years", just multiply the number of years by 365 to get the days, and then multiply the result by 24, to get the number of hours. It is irrelevant whether you use a 24-hour clock, or a 12-hour clock.