With all due respect Harry, you are a genius in your observation. Thank you for reminding me that I also considered it possible that the 'Rosigold' could produce ripe fruit in February.
I thus find it worthy to appropriate/concentrate my efforts in learning about how to induce the 'Rosigold' mango cultivar to produce ripe fruit as early as February.
Harry, you and may I say, myself also, have single handedly figured out how to solve the 'South Florida Winter Mango Void.'
Where I'm at, Zone 10b, Miami, FL, USA, the months of the year where I have no mangos are December, January and February.
How the 'S.FL Winter Mango Void' could be solved/filled:
The 'Keitt' mango produces ripe fruit into November, maybe it could be induced to produce ripe fruit into late November, or even early December.
If we could find a way to induce 'Miracle' (Chok-Anon) mango to consistently produce fruit from ...................December to January, and
If we could induce 'Rosigold' to produce ripe fruit in ................................................................................February., then
My 'Rosigold' mango has been consistently fruiting in the first few days of .................................................March, and then there you have it, Mango 24/7.
I know that there are a lot of 'Ifs,' and that more work may need to be done in order to accomplish this, like inducing the 'cultivars' as mentioned. Or, crossing 'Rosigold' and/or 'Miracle,' with each other or to other varieties, to get the desired results. But, if I may say so, I can already see the light at the end of the tunnel.
We're very close to having mango for all the twelve months of the year, 24 hours a day, seven days a week.
Again, good work/observation, thanks.