does amount (hours) of sun determin length of flowering time ??

wtf are u talking about? hmm

 

no definitely not, outdoors amount of light does not cause flowering, it depends on strain and u can determine harvest date by the strain

 

What the fuck are you talking about? Most certainly amount of direct light the plants get a day effects how fast they flower.

 

I know photoperiod definitely matters but im not sure if say, you have a plant for 8 hours a day in direct sunlight and then you have a plant thats in direct sunlight for 5 hours a day that the one that gets the most will bud faster. I mean even in the shade both plants are still getting sun. I thought the amount of darkness mattered more. I could be wrong as i have been before but thats whats always been told to me. Thats why u can watch your plant all day and not see buds growin but you wake up the next morning and can definitely tell its gettin bigger.

 

the latitude causes an earlier or later flowering start. If you're more up north, like in the UK, you get longer days than down south like in Spain (closer to equator) so flowering will start later in the UK.
But a plant getting 5 hours and one getting 10 hours will flower the same, 10 hours will get much more and tighter bud though.
It's mostly in the genetics and the latitude (light hours) that flower onset shifts, not in the sun hours received by the plant. so a same genetic grown North or south will still be finished (ripe) in the same number of weeks.
The main thing is when flowering starts. This can be triggered esp. for northern growers wishing to finish sativas for example by the light deprivation method (cover at 8 pm, uncover at 8 am) for several weeks. Take off box when it's 14/10 outdoors where you are (aug or july depending on latitude) so the plant doesn't veg back.

 

Corto nailed it.