system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek] How are ‘days’ on a ship calculated? If they are 24 hours, how do non-Earth species cope? And, how does any species adapt to an environment of artificial light?
gpt
It depends on the ship honestly. For most Starfleet ships, a 24 hour "day" split into 3 ships was standard. However that can be adjusted depending on the needs of the vessel, the makeup of the crew, and the command style of the captain. For instance due to the proximity to Bajor, Deep Space 9 had a 26 hour "day" split in to 4 shifts.

As it turns out many planets have a similar day period, Vulcan was almost 27 hours, Bajor had 26, Q,onoS is 24 like Earth.

For those who have difficulty adapting their circadian rhythm to a ships schedule, there are treatments available.