I got a couple Pickerings in mid may, but 95% came in the last few days of May- end of June, not sure if they're usually earlier than that- the tree did flower fairly late(early-mid Feb).
Dwarf Hawaiian looks the most promising starts flowering in Nov, I might finally let it hold some fruit this year.
Neighbor had a Rosigold with 100+ fruit on it this year, they were all gone by May 31.
Hopefully this year, I will have earlier fruit, I know PPK, Edward, and sometimes Carrie can be early, but I haven't experienced it like growers in SE Florida yet.
I don't ever see us having a growing season like India- where they pick Alphonsos in March- way too wet here. And dangerous cold fronts are always a threat-