Roquen, I demand feed Oliver. He tends to cluster feed in the evenings, but his overnight feeds have followed the same loose pattern since day 2:

between 10.30-11.30pm
between 2.30-3.30am
between 6.30-7.30am

Only once did he drop the 2.30-3.30 feed and I woke up anyway!

Its roughly 3 hours between feeds during the day.