-- ~14 minute cycle, 6m56s of full light, 2m46s light to dark, 1m24s full dark, 2m46s dark to light
game.player.surface.ticks_per_day = 50000
game.player.surface.dusk = 0.25
game.player.surface.evening = 0.45
game.player.surface.morning = 0.55
game.player.surface.dawn = 0.75