[taraparo]

The number on your yearly "birthday" is not the number of birthdays you had (you only have one birthday) but the number of years you survived since your birth.

So the day of your fifth birthday is the first day of your sixth year alive.

[gre]

Birthday vs birth day but yeah. It works if you say it

[dasyatidprime]

I've generally seen “birthday” (within a year; recurs) versus “birthdate” (happens once).

[noahlt]

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