Midnight! does it exist?

[Lockjaw]

So what your saying is that it would be more appropriate to stay happy first anniversary of your birthday, then happy second anniversary of your birthday, and so on and so forth.

 

Which is, of course, how the French express it.

 

So where does that leave us?

[RootsBooster]

How many years has someone spent alive when they celebrate their 100th birthday?

100

But some are saying it's 99 years [and nine months].

That's just silly, who's saying that?

The 100 means it's the start of their 100th year, not that 100 years have elapsed since their birth.

The 100 mark (birthday, short for anniversary of the day you were born) is the completion of their 100 years of living.

[Jeffrey Shaw]

Midnight is not 12:00 it is 00:00.

Or it's 24:00