How long show this take?

Ive just cut back the light hours to 12 and 12 dark hours and i was wanting to know how long it should take for the flowers/ buds to begins showing, a week two weeks?

One is a sativa and one is an indica \

They usually take about 2-3 weeks from 12/12 to start showing flowers


Current grow
https://www.rollitup.org/indoor-growing/442573-1600watt-feminized-cheisel-vanilla-kush.html

Last grow - finished 1.5LBS
https://www.rollitup.org/indoor-growing/406006-1000watt-feminized-barneys-farm-violator.html