Nudges automatically sending at midnight

Hi all,

I have created a scheduled nudge to email out reminders for users who have not completed a Journey.

I have noticed that the nudge is automatically triggering at midnight. I expected the nudges to be sent based on the schedule I created in the nudge, AND when I scheduled the "Process HCM Scheduled Nudges" ESS job.

However it looks like I don't need to run that ESS jobs, and the nudges are sending automatically - I have queried the ESS_REQUEST_HISTORY table and I can see that Oracle is automatically running a nudge ESS job every day which triggers at midnight.