Yes, mine started preflowers about 7/13/2022. They gradually increased and I wrote 7/20/2022 on my calendar for that day, stating to myself it's the beginning of full flowering. They have been steady at it ever since.
In my case, there is one huge facto and one potential factor that's a bit smaller ... mine are called "fast" flower plants. They are photoperiod plants with a revved up genetic clock because they were crossed with an autoflower plant. F1 hybrids typically start flowering a few weeks earlier than their full-photo cousins. These are not autoflowers.
The smaller factor is I have 3/4 of the north wall covered to create a visual barrier with the neighbor who just moved into the house next door. (Don't know them, don't need issues) I'm sure I am beneath the darkness threshold 5-10 minutes sooner because of this. Likewise, I'm probably the same amount of time behind at daylight. I believe this also moves the clock ahead.
