But....today is February 29. Something that doesn't happen every year. As a matter of fact, we get a February 29 only every "leap year."
So...how do you say "leap year" in Chamorro?
Well, "leap year" would have been an idea introduced by the Spaniards, so åño bisiesto would have been "leap year" for our Chamorro grandparents.
Bisiesto means twice-six. I've read up on it, and can't make heads or tails of it. Google it yourself : bissextile.