When to start counting flowering days. When switch to 12/12 or first signs of buds

[JoeyBliss]

Some indica dominant plants grown from seed if only begged for 4-5 week I e noticed won’t show any budget until day 20-23 in strain like purple urkle and blue black and even motorbreath all didn’t show until day 20 something but a longer veg and they show a few days earlier. Indoor and outdoor is really different I’ll see what I see at day 20 indoors on certain varietals by mid to end July like blueberry muffins and gelatos. All start to flower outside when the getv10 hours of dark. So there are alot of things at play. But I should alway see some bud by day 24 or u def have a issue with timer or light leaks