What is the cooldown to kill the 3 new Kilmaresh mini-bosses (Wanted mission)?

Question

As title says, what is the cooldown to kill the 3 new Kilmaresh mini-bosses (Wanted mission)?

The bosses are:

1. Amenef The Burning
2. Sister Hetai
3. Neferi The Spy

By that I mean, how long do I have to wait to kill each boss again, after killing it once.

Answer 1

The cooldown for someone to face those 3 minibosses again is 20 hours, as usual.