-- ~3.5 minute cycle, 1m44s of full light, 42s light to dark, 21s full dark, 42s dark to light
game.player.surface.ticks_per_day = 12500
game.player.surface.dusk = 0.25
game.player.surface.evening = 0.45
game.player.surface.morning = 0.55
game.player.surface.dawn = 0.75