How does it turn nighttime on counterfeit island?

Answer 1

When you get the job and take the Forgery training in the museum, you get the key to the supply room, where the sixth piece of the Dragon Face picture is. When you leave the museum, it is night and you must re-enter through the Dragon Face hatch in the underground.

Once you have all of the pieces, enter the underground through the exit at the Docks.

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Locations of the Dragon Face pieces:

The City Docks : top of the boat mast

The City Docks : in the sand to the far right

The Museum : on top of the museum

The Inn : above the street artist, near the roof

The Underground : in the arch where the bulb is hanging

The Museum : in the Supply Room (must take Tour, get job)