| Name | <WorldTag.sky_darkness> | 
| Returns | ElementTag(Number) | 
| Description | Returns the current darkness level of the sky in this world. This is determined by an equation that factors in rain, thunder, and time of day. When 4 or higher, players are typically allowed to sleep through the night. | 
| Generated Example |  | 
| Source | https://github.com/DenizenScript/Denizen/blob/dev/plugin/src/main/java/com/denizenscript/denizen/objects/WorldTag.java#L1026 |