Name: greene Savannah, GA (Sunset 28) (Zone 8b) I have no use for internet bullies!
Hymenocallis
I posted a similar plant (asking for an ID) and was told only that it's a Hymenocallis. They could not be more specific.
Perhaps you will have a more definite answer since yours in in Hawaii.
Sunset Zone 28, AHS Heat Zone 9, USDA zone 8b~"Leaf of Faith"