Date-Math in n8n: Building a “Recurring” Workflow.

I’ll demonstrate the logic behind our Patient Recall System: Query Database -> Filter Last_Visit < Today - 180 Days -> Check Next_Appointment is Empty -> Trigger WhatsApp Template It runs daily at 9 AM. A simple loop that ensures patient retention.

The key to success lies in automating the workflow. With n8n and a bit of date-math, you can build a recurring workflow that boosts patient retention and recovers lost revenue. Check out Shahi Raj’s technical blog