I used to grew tomatoes ,
and in my studies I discovered that there is a tomato hormone spray
available at that time from Seed companies .
it seems tomatoes need a 70 degree or so if not more
any way , some worth at night , then the tomato releases the hormone
and flowers set.
I used to spray my first blossoms w it , and got tomatoes a month earlier
and kept at it until weather did the trick.
My mother grew tomatoes in California , on the peninsula
her first ripe Early Girls had similar timing to mine in NE
her plans went in in early feb
the reason ? its very cool at night on the Peninsula until much later
sent her a spray bottle . Early Girls were much much earlier the following year.
tomatoes area very interesting plants
you can do all sorts of things , easily , that will effect your first perfectly ripe
tomato
https://calag.ucanr.edu/archive/?type=pdf&article=ca.v003n07p8
https://bonide.com/product/tomato-blossom-set-spray-rtu/
https://www.amazon.com/Bonide-BND544-Tomato-Blossom-Hormone/dp/B002CA92NC