Horticulturists would know——the affect of daylight hours.
My winter grass won’t grow with less sunlight than dark.....generally around the spring solstice.
My bet is Mother nature has learned both heat and light are the go signs. I’ll be interested to see if these fruit trees were triggered to blossom with 1 day of spring temperatures.
Another thing is the Lilacs in Rochester. Haven't heard any screaming about that either.