And just to confirm Rob's notation on later flowering mangoes:
The problems i have seen with late bloom that are into April is the warming temps, or even hot temps, can have some adverse affects on the fruit setting and holding.
My experience is heat DEFINITELY affects fruit setting and holding. I'm just about ready to cover my Edward which is displaying those BB-sized fruitlets with shade cloth cuz
they just start to drop like flies if I don't, and even if I do. This year, it'll be a double covering of white 50% shade to see it that helps - it's in a very warm spot in the front/
south side of the house and the reflected heat is a monster, especially out here in the desert (great in winter though for fending off frosty weather!)
Gary