I cannot seem to get an Email Notification when a record's due date is reached

[Navaneeth1]

I wish to receive an email when that particular date and time arrive in real-time. 

So far I have created a Notification in System Notification>Email>Notifications with the following condition as shown in the below image.

Email sending is enabled in Email properties and the notification is working for record updation or insertion. 

Can anyone please help me?

Thank you.

[Navaneeth1]

You can create a custom action in the flow designer, add a custom script to the custom action to get the current due date, perform JavaScript date manipulation operations on the script to add the 20 business days, and then provide the output of the script to an "Update Record" action in the flow designer.