How to get my firefly niagra particle system to appear at night in my Level Blueprint

Hey there fellow UE4 users! So… I’m a bit new to Unreal Engine and have been playing around with the nodes system. I’ve put together a Day/Night cycle within the Level Blueprint and wanted to add my Firefly particle fx to my environment when it becomes night. I have them placed on the map in certain areas where I’d like to have the night cycle trigger their visibility until the sun returns. I’m sure this is quite a simple task for those that are more familiar with the engine and was hoping someone could help steer me in the right direction.