Just like in Assassin’s Creed Origins, you can manually change the time of day in Assassin’s Creed Odyssey.
The game never really tells you about it, but you start with a skill that enables you to meditate and quickly pass time. Head on over to your skill tree page and you can find in the row of separate skills at the bottom.
In any case, whether you look for the skill or not, you’ll find that you can quickly change the time of day by pressing and holding the touch pad on PS4, or the view button on Xbox One. You know, the button that looks like it has got one window displayed over another on it.
Changing the time of day has its uses. Exploring the wilderness at night is hampered by you not being able to see very far, for instance. While if you visit bandit camps at night there’s a good chance that many of their inhabitants will be asleep. Use your ability to change the time of day to your advantage.