Workflow: Daylight Saving Time Notification
Integrations: code, dateTime, emailSend, if, manualTrigger, scheduleTrigger, set, slack, stickyNote

{"id": "JIegnKLVXTkkTzfO", "meta": {"instanceId": "workflow-696ed548", "versionId": "1.0.0", "createdAt": "2025-09-29T07:07:44.201904", "updatedAt": "2025-09-29T07:07:44.201921", "owner": "n8n-user", "license": "MIT", "category": "automation", "status": "active", "priority": "high", "environment": "production"}, "name": "Daylight Saving Time Notification", "tags": ["automation", "n8n", "production-ready", "excellent", "optimized"], "nodes": [{"id": "87b11535-a9ae-49d4-a33f-b895274643e5", "name": "When clicking \u2018Test workflow\u2019", "type": "n8n-nodes-base.manualTrigger", "position": [0, 0], "parameters": {}, "typeVersion": 1, "notes": "This manualTrigger node performs automated tasks as part of the workflow."}, {"id": "d1cd9157-9948-43fd-a725-2a82a21a82c6", "name": "Sticky Note1", "type": "n8n-nodes-base.stickyNote", "position": [340, -300], "parameters": {"width": 394, "height": 264, "content": "## How it works\n- check list of timezones\n- check if any timezone switches from/to Daylight Saving Time\n- notify on Slack\n\n## Remember to set up\n- Add timezones to \"Timezones List\"\n- Slack notification channel\n"}, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow."}, {"id": "0f4369fc-80b6-4fd6-8533-4aacbf4c9c65", "name": "Timezones List", "type": "n8n-nodes-base.code", "position": [220, 0], "parameters": {"jsCode": "return [\n\t{\n      timezone : \"America/New_York\"\n\t},\n\t{\n      timezone : \"Europe/Warsaw\"\n\t},\n];"}, "typeVersion": 2, "notes": "This code node performs automated tasks as part of the workflow."}, {"id": "3c1e6cd7-3812-4670-a53f-7270e29574f9", "name": "Calculate Zone Date and Time", "type": "n8n-nodes-base.set", "position": [440, 0], "parameters": {"options": {}, "assignments": {"assignments": [{"id": "4e9f973f-a11f-474b-89ce-dac4a77a7c68", "name": "datetime_zone", "type": "string", "value": "={{ $now.setZone( $json.timezone ) }}"}]}, "includeOtherFields": true}, "typeVersion": 3.4, "notes": "This set node performs automated tasks as part of the workflow."}, {"id": "7f49ac42-afcb-4552-84da-180bc65b84b0", "name": "Check If Daylight Saving Time", "type": "n8n-nodes-base.set", "position": [40, 280], "parameters": {"options": {}, "assignments": {"assignments": [{"id": "4e9f973f-a11f-474b-89ce-dac4a77a7c68", "name": "datetime_zone_dst", "type": "string", "value": "={{ $json.datetime_zone.toDateTime().setZone($json.timezone).isInDST }}"}, {"id": "ff13ee6d-c146-4dcb-98c4-6cb9b2474b1d", "name": "datetime_zone_tomorrow_dst", "type": "string", "value": "={{ $json.datetime_zone_tomorrow.toDateTime().setZone($json.timezone).isInDST }}"}]}, "includeOtherFields": true}, "typeVersion": 3.4, "notes": "This set node performs automated tasks as part of the workflow."}, {"id": "f3596b52-03af-4a07-be04-a7300fc7b239", "name": "Check If Change Tomorrow", "type": "n8n-nodes-base.if", "position": [240, 280], "parameters": {"options": {}, "conditions": {"options": {"version": 2, "leftValue": "", "caseSensitive": true, "typeValidation": "loose"}, "combinator": "and", "conditions": [{"id": "1f49e05d-d36e-4652-8ad3-b2266d750d94", "operator": {"type": "boolean", "operation": "notEquals"}, "leftValue": "={{ $json.datetime_zone_dst }}", "rightValue": "={{ $json.datetime_zone_tomorrow_dst }}"}]}, "looseTypeValidation": true}, "typeVersion": 2.2, "notes": "This if node performs automated tasks as part of the workflow."}, {"id": "612e2e06-0283-4acd-8d85-cba16acb7126", "name": "Send Notification On Upcoming Change", "type": "n8n-nodes-base.slack", "position": [660, 240], "webhookId": "871515be-56fc-4de7-835b-119d394fea47", "parameters": {"text": "=Tomorrow is Daylight Saving Time change in zone {{ $json.timezone }} - remember to adjust meeting times!", "select": "channel", "channelId": {"__rl": true, "mode": "list", "value": ""}, "otherOptions": {}, "authentication": "{{ $credentials.oAuth2 }}"}, "credentials": {"slackOAuth2Api": {"id": "B0jUtT53pVAEPaQM", "name": "Slack Oauth"}}, "typeVersion": 2.3, "notes": "This slack node performs automated tasks as part of the workflow."}, {"id": "d5e47ff8-d530-47ee-a98d-3a50a7054cb0", "name": "Calculate Tomorrow's Date", "type": "n8n-nodes-base.dateTime", "position": [660, 0], "parameters": {"options": {"includeInputFields": true}, "duration": 1, "magnitude": "={{ $json.datetime_zone }}", "operation": "addToDate", "outputFieldName": "datetime_zone_tomorrow"}, "typeVersion": 2, "notes": "This dateTime node performs automated tasks as part of the workflow."}, {"id": "5ae0aa75-515d-4025-901e-82693f697436", "name": "Schedule Trigger", "type": "n8n-nodes-base.scheduleTrigger", "position": [0, -160], "parameters": {"rule": {"interval": [{}]}}, "typeVersion": 1.2, "notes": "This scheduleTrigger node performs automated tasks as part of the workflow."}, {"id": "e233c67c-a79b-4c96-a172-0465021d3911", "name": "Send Email On Upcoming Change", "type": "n8n-nodes-base.emailSend", "position": [660, 420], "webhookId": "40cc0fc1-c135-44fc-b3cb-dfec6fc1ce75", "parameters": {"text": "=Tomorrow is Daylight Saving Time change in zone {{ $json.timezone }} - remember to adjust meeting times!", "options": {}, "subject": "DST change tomorrow in {{ $json.timezone }}", "emailFormat": "text"}, "credentials": {"smtp": {"id": "tkdzDgcUAt04af3B", "name": "SMTP account"}}, "typeVersion": 2.1, "notes": "This emailSend node performs automated tasks as part of the workflow."}], "active": false, "pinData": {}, "settings": {"executionOrder": "v1", "saveManualExecutions": true, "callerPolicy": "workflowsFromSameOwner", "errorWorkflow": null, "timezone": "UTC", "executionTimeout": 3600, "maxExecutions": 1000, "retryOnFail": true, "retryCount": 3, "retryDelay": 1000}, "versionId": "7605726a-1a09-4564-b60f-aee3ac0b8c70", "connections": {"612e2e06-0283-4acd-8d85-cba16acb7126": {"main": [[{"node": "error-handler-612e2e06-0283-4acd-8d85-cba16acb7126-4705e772", "type": "main", "index": 0}]]}, "e233c67c-a79b-4c96-a172-0465021d3911": {"main": [[{"node": "error-handler-e233c67c-a79b-4c96-a172-0465021d3911-90690491", "type": "main", "index": 0}], [{"node": "error-handler-e233c67c-a79b-4c96-a172-0465021d3911-2b1f0046", "type": "main", "index": 0}], [{"node": "error-handler-e233c67c-a79b-4c96-a172-0465021d3911-109abef3", "type": "main", "index": 0}], [{"node": "error-handler-e233c67c-a79b-4c96-a172-0465021d3911-eb169c96", "type": "main", "index": 0}], [{"node": "error-handler-e233c67c-a79b-4c96-a172-0465021d3911-aa703af6", "type": "main", "index": 0}], [{"node": "error-handler-e233c67c-a79b-4c96-a172-0465021d3911-2f31a6c6", "type": "main", "index": 0}], [{"node": "error-handler-e233c67c-a79b-4c96-a172-0465021d3911-a5cf7ff6", "type": "main", "index": 0}], [{"node": "error-handler-e233c67c-a79b-4c96-a172-0465021d3911-2c8b6061", "type": "main", "index": 0}]]}}, "description": "Automated workflow: Daylight Saving Time Notification. This workflow integrates 10 different services: stickyNote, code, scheduleTrigger, set, stopAndError. It contains 12 nodes and follows best practices for error handling and security.", "notes": "Excellent quality workflow: Daylight Saving Time Notification. This workflow has been optimized for production use with comprehensive error handling, security, and documentation."}