Outdoor Flowering

Hi, I'm wondering what the average length of day is for (most) marijuana strains to begin flowering outdoors. (Over here is currently about 12hr/40min of daylight)

Also, my girls have shown their sex over a month ago and have had the pre-flower pistils as well as stipules dry up and fall off; only thing left is the pear-shaped growth at the nodes. Normal?

Any advice would be appreciated.

I have had my satori in the ground for two months now and I have just begun to see some signs of flowering on one of my plants. Seems to take forever outdoors, currently doing first indoor an outdoor grow at the same time and indoor flowered way faster under a controlled light environment