Game-day

A day lasts 25000 Game-ticks or 416.66~ Game-seconds.

The light varies throughout the day varies in a cycle consisting of 4 phases:

Phase	Behaviour	Time of day at start	Time of day at end	Duration (in ticks)	Duration (in seconds)
day	fully light	0.75	0.25	12500	208.33~
dusk	darkening	0.25	0.42	5000	83.33~
night	fully dark	0.42	0.58	2500	41.66~
dawn	lightening	0.58	0.75	5000	83.33~

  ------------- day -------><---- dusk ----><---- night ----><---- dawn ----><-------- day ------------
  
% 0    5    10   15   20   25   30   35   40   45   50   55   60   65   70   75   80   85   90   95  100
  |----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|

During dusk, the light level decreases linearly from fully light to fully dark. During dawn, it increases linearly from dark to light.

Note: The actual time between phases can vary +/- a tick due to rounding errors.

These values are accurate as of version 0.11.8.

Longer or shorter days?

It is possible - and there are some mods, that do it - to modify the length of a game-day. So a game day is not a fixed length, it depends on the loaded mod. The above describes only the vanilla game.

See also

• Time
• Lua/Game#tick.
• Game-tick
• Game-second
• Units