Is there any blue print time node can be used in editor, not runtime only?

I’m working on flickering light in unreal. try to use curve file to drive the flickering light animation. but most of the time node (ex. get game time in second) are runtime only. anyone know if there is any blue print time node can be used in editor not just runtime only? so I don’t need to switch to game play mode to view my flickering light animation. Thanks