American. Day-duh.

Data: First, the two A’s/vowels:

The first of two A’s gets the “Aey” sound, the second gets the “Ah” sound.

Then, because I’m from California, the ah becomes uh.

Then, similarly, the “tuh” has a hard T at the beginning. But again because California/USA, the T becomes a D (British: butter (“buttah”, hard t’s), usa: budder(soft t’s or d’s))

Thus: day-duh.