Look, in order to do that, you need the tool DNS (Day, Night and Seasons). You can download it in this topic: http://wahackforo.com/t-Day-Night-and-Seasons-para-insertar-estaciones-y-d%C3%ADa-y-noche-tambi%C3%A9n-en-batallas
Traducción: Mira, para hacer eso, necesitas la herramienta DNS (Day, Night and Seasons). Puedes descargarla en este tema: http://wahackforo.com/t-Day-Night-and-Seasons-para-insertar-estaciones-y-d%C3%ADa-y-noche-tambi%C3%A9n-en-batallas
Byes =) I hope my answer helps you.
Ray Laé Àlfori (Rayku Rayquaza)