Workflow: automate with n8n workflow for Manual Datetime Automate Triggered
Integrations: dateTime, manualTrigger

{"nodes": [{"name": "On clicking 'execute'", "type": "n8n-nodes-base.manualTrigger", "position": [250, 300], "parameters": {}, "typeVersion": 1}, {"name": "Date & Time", "type": "n8n-nodes-base.dateTime", "position": [450, 300], "parameters": {"value": "14/02/2020", "options": {"fromFormat": "DD/MM/YYYY"}}, "typeVersion": 1}], "connections": {"On clicking 'execute'": {"main": [[{"node": "Date & Time", "type": "main", "index": 0}]]}}}