Trees don't make shade, shade is the result of an object blocking the sun.
An irrigation controller, a flagstick, a ballwasher, and a PGA Pro taking 2 minutes to hit a shot all create shade by blocking the sun.
If you have no sun shining, which people might call this "dark", you have no shade ...
Ps: the "dark" reference reminds me of one of the late George Carlin's skits about the weather forecast:
"Weather forecast for tonight: dark. Continued dark overnight, with widely scattered light by morning."