Hii I have setup 6 light shadows sources in my dungeon , but the first two are always visible from any distance another is flipping in and out only when I get close , why ?

Also how can I do to make the direct lights disappear or switch off at certain time of day?

Only four shadow casting lights can be rendered on screen at once, otherwise you get the flickering you've described. Replace some of them with no-shadow casting lights.

Easiest way would be to attach a script to an activator which is the parent of all the lights. This script checks at regular intervals (depending on how precise you want it to be), and checks the current time. If it's after a certain time, then disable itself, and the other way round.

For visibility, you can also set their External Emmitance to one of the FXRegions. They will always appear, but it will make them dim blue at night, reddish in the morning, gold/white during the day, etc.

I forgot about that, good idea. It all depends on what effect you're looking for.

How I do that?


And that?

possibly I would like to have like no beam in night , right beam at sunrise left on sunset etc ....

http://www.creationkit.com/OnUpdate_(Papyrus) would be the event you'd want for enabling/disabling the parent at certain times.

http://www.creationkit.com/Bethesda_Tutorial_Lights_and_FX#Using_Effects_and_External_Emittance would be if you wanted to do what Alexander described.

To do what you described at the end of your post would basically consist of a mixture of both techniques. Creating three beams, one in the middle and two angled at opposing angles. Set the External Emittance on all of them to that of an FXRegion, then script it so that only the right beam is enabled at sunrise, only the middle at day, only the left at sunrise, and then all three disabled at night.

not really sure how to use the first ....