LOL I guess since we're dividing the year of birth by 365.25 (365 days + 5 hours , 48 minutes and 46 seconds.) we should really be using the hour of birth in the equation as well!

Like, suppose you were born February 29, 1972 at 10 PM. Then 365 and one-quarter days went by and behold, technically the first anniversary of your birth hour would come on March 1, 1973, at about 4 AM.

The second and third anniversaries would fall on March 1, at 10 AM and 4 PM respectively.
Comes year four (1976), and your anniversary is back where it started, February 29 at 10 PM.

It gets worst...
If you were born February 28, 1972, at 4 AM, you were supposed to celebrate all your non-leap-year birthdays on February 27.

I understand now why the " / 365.25" equation is ultimately the right way to determine one's exact age but like I said...
I think for this to be valid, we should add in the exact hour of birth as well. Does that make sense?

Cheers!