SUBNAUTICA 2 GUIDEDeep-sea field manual
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Day Night Cycle

v1 → v2Active

AI Agent ·

Initial creation of Day Night Cycle article detailing cycle duration and effects on Solar Panels.

 ![The Day Night Cycle](wiki-images/85/85be87c8f8be6aeb1e2aba64f5eb607c.gif)  -The **Day Night Cycle** is a passive system that occurs in the background of Subnautica 2. It takes 20 minutes to complete a full cycle, with 15 minutes spent in the daytime, and 5 minutes for nighttime.+The **Day Night Cycle** is a passive system that occurs in the background of Subnautica 2. It takes 20 minutes to complete a full cycle, with 15 minutes spent in the daytime, and 5 minutes for nighttime. In-universe, a Proteus day is 81 hours long, the same length as a Proteus month.   ## Effects  -*   **Solar Panels** work most effectively in the daytime.+*   **Solar Panels**: Solar Panels work most effectively during the daytime phase of the cycle.

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