How do you get the Lake trio to appear in Nameless Cavern?

Question

The Cavern is there but the ring won't react.

Answer 1

You must have 3 Pokemon on your team that have max happiness
One of the trio will appear if at least 3 of your Pokemon on your team have their max 250 happiness
ALSO
Uxie can be encountered between 20:00 and 21:00
Azelf can be encountered between 21:00 and 3:59
Mesprit can be encountered between 4:00 and 19:59
Source: Linkity Link

Comments

the last part is what i didn't know