Describe the problem/error/question
i use n8n on digital ocean and try google calendar template from n8n google calendar docs. I live in Kyiv and when i ask through the chat make event for example on 08:00 ai agent make it in 3 hours on 11:00. There are shift on 3 hours. I make this google calendar assistant for client who live on Bali, how i could make this assistant do well for all time zone. For example he move to Europe or to USA i want that this assistant work well for every time zone. What i should to do?
Thank you)
What is the error message (if any)?
Please share your workflow
(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.)
{
"nodes": [
{
"parameters": {
"options": {}
},
"id": "94363d80-25e4-4105-97da-62a838d5c8d4",
"name": "When chat message received",
"type": "@n8n/n8n-nodes-langchain.chatTrigger",
"position": [
100,
380
],
"webhookId": "5308edc9-738b-4aae-a789-214e2392579a",
"typeVersion": 1.1
},
{
"parameters": {
"model": "gpt-4.1-mini",
"options": {}
},
"id": "2e054553-d766-4bc8-8071-cb934ce395a3",
"name": "OpenAI Chat Model",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
540,
1200
],
"typeVersion": 1,
"credentials": {
"openAiApi": {
"id": "cOJeDyHb0VCS1yDk",
"name": "OpenAi account"
}
}
},
{
"parameters": {},
"id": "941e1776-efe7-4d59-8133-74022b3bd9d1",
"name": "Window Buffer Memory",
"type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
"position": [
960,
1200
],
"typeVersion": 1.3
},
{
"parameters": {
"descriptionType": "manual",
"toolDescription": "Use this tool when you’re asked to retrieve events data.",
"operation": "getAll",
"calendar": {
"__rl": true,
"value": "[email protected]",
"mode": "list",
"cachedResultName": "Работа"
},
"options": {
"timeMin": "={{ $fromAI('start_date') }}",
"timeMax": "={{ $fromAI('end_date') }}"
}
},
"id": "7f3d7ece-d820-4dfe-9054-08b00323b96d",
"name": "Google Calendar - Get Events",
"type": "n8n-nodes-base.googleCalendarTool",
"position": [
1340,
1180
],
"typeVersion": 1.2,
"credentials": {
"googleCalendarOAuth2Api": {
"id": "DuZTlVnG1Cwac9MD",
"name": "Google Calendar account"
}
}
},
{
"parameters": {
"descriptionType": "manual",
"toolDescription": "Use this Google Calendar tool when you are asked to create an event.",
"calendar": {
"__rl": true,
"value": "[email protected]",
"mode": "list",
"cachedResultName": "Работа"
},
"start": "={{ $fromAI('start_date') }} ",
"end": "={{ $fromAI('end_date') }} ",
"useDefaultReminders": false,
"additionalFields": {
"attendees": [],
"description": "={{ $fromAI('event_description') }} ",
"summary": "={{ $fromAI('event_title') }} "
}
},
"id": "88e289ee-d46a-47dc-9e66-ae08505bf53b",
"name": "Google Calendar - Create events",
"type": "n8n-nodes-base.googleCalendarTool",
"position": [
1760,
1180
],
"typeVersion": 1.2,
"credentials": {
"googleCalendarOAuth2Api": {
"id": "DuZTlVnG1Cwac9MD",
"name": "Google Calendar account"
}
}
},
{
"parameters": {
"content": "## Chat trigger - When a message is received\n\nThis node is the **entry point of the workflow**. \nIt triggers the workflow whenever a message is sent to the **chat interface**.\n\nOptions with n8n:\n- **Embed the chat interface** anywhere you want.\n- Use a **webhook node** instead of this node to connect with interfaces like **[Streamlit](https://docs.streamlit.io/develop/tutorials/llms/build-conversational-apps)** or **[OpenWebUI](https://docs.openwebui.com/)**.\n- Use nodes for communication platforms (**Slack**, **Teams**, **Discord**, etc.) if you know how to configure them.\n",
"height": 560,
"width": 320,
"color": 7
},
"id": "96d1c296-4e54-4431-9825-c82423955957",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
0,
0
],
"typeVersion": 1
},
{
"parameters": {
"content": "## Tools Agent - Calendar AI Agent\n\nThis **node** configures the **AI agent** for interaction with Google Calendar. \nIt includes the following features:\n\n- A **prompt source**: This is the user message derived from the chat input of the preceding node (`When chat message is received`).\n- A **system message**: This defines the system prompt to guide the AI agent's behavior. It incorporates the variable `{{ DateTime.local().toFormat('cccc d LLLL yyyy') }`, allowing the AI agent to determine the current date and interact with Google Calendar accordingly. For example, the agent can understand a request like \"Create an event called 'n8n workflow review' for next Tuesday.\"\n\n\nn8n nodes come with built-in **guardrails**, ensuring that if the user requests tasks outside the AI agent's setup, it may not function as intended. (Feel free to test it!)\n",
"height": 560,
"width": 1520,
"color": 7
},
"id": "9768bad4-dffa-4f54-97fa-66bd78f6a099",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
440,
0
],
"typeVersion": 1
},
{
"parameters": {
"promptType": "define",
"text": "={{ $json.chatInput }}",
"options": {
"systemMessage": "=You are a Google Calendar assistant.\nYour primary goal is to assist the user in managing their calendar effectively using two tools: Event Creation and Event Retrieval. Always base your responses on the current date: \n{{ DateTime.local().toFormat('cccc d LLLL yyyy') }}.\nGeneral Guidelines:\nIf the user's initial message is vague (e.g., \"hello\" or a generic greeting) or does not specify a request, explain your capabilities clearly:\nExample: \"Hello! I can help you manage your Google Calendar. You can ask me to create an event or retrieve event data. What would you like me to do?\"\nIf the user specifies a request in their first message, begin preparing to use the appropriate tool:\nFor event creation, gather necessary details like start date, end date, title, and description.\nFor event retrieval, ask for the date range or time period they want to query.\nTool: Event Creation\nWhen asked to create an event:\n\nRequest the start and end dates/times from the user.\nDate format: YYYY-MM-DD HH:mm:ss\nCollect the following information:\nstart_date: Exact start date and time of the event.\nend_date: Exact end date and time of the event.\nevent_title: Event title in uppercase. Suggest one if not provided.\nevent_description: Generate a brief description and present it for confirmation.\nTool: Event Retrieval\nWhen asked to retrieve events:\n\nAsk for the date range or period they are interested in. Examples:\nFor \"last week,\" retrieve events from Monday of the previous week to Friday of the same week.\nFor \"today,\" use the current date.\nFormat the date range:\nstart_date: Start date and time in YYYY-MM-DD HH:mm:ss.\nend_date: End date and time in YYYY-MM-DD HH:mm:ss.\nKey Behaviors:\nClarity: Provide a clear and helpful introduction when the user's request is unclear.\nValidation: Confirm details with the user before finalizing actions.\nAdaptation: Handle varying levels of detail in requests (e.g., \"Add a meeting for next Monday morning\" or \"Retrieve my events for this weekend\").\nProactivity: Offer suggestions to fill in missing details or clarify ambiguous inputs.\nLanguage Matching: Ensure all interactions, including event titles, descriptions, and messages, are in the user's language to provide a seamless experience."
}
},
"id": "5ff22c95-0000-4825-aa7e-68e564fbb23b",
"name": "Calendar AI Agent",
"type": "@n8n/n8n-nodes-langchain.agent",
"position": [
960,
380
],
"typeVersion": 1.7
},
{
"parameters": {
"content": "## OpenAI chat model\n\nThis node specifies the chat model used by the agent. \nIn the template, the **default LLM is gpt-4o** for its high relevance.\n\nOther options:\n- You can **try gpt-4o-mini**, which is more cost-effective.\n- You can also choose **other LLM providers besides OpenAI**, but make sure the LLM you select **supports tool-calling**.\n",
"height": 720,
"width": 320,
"color": 5
},
"id": "74bacce0-6a09-4bd9-8d2b-ba664b961d6f",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
440,
620
],
"typeVersion": 1
},
{
"parameters": {
"content": "## Window buffer memory\n\nThis node manages the **memory** of the agent, specifically the **context window length** for chat history. \nThe default is set to 5 messages.\n\nNote: \nThe **memory** is **temporary**. If you want to **store conversations with the agent**, you should use other nodes like **Postgres chat memory**. \nThis can be easily set up with services like **[Supabase](https://supabase.com/)**.\n",
"height": 720,
"width": 320,
"color": 5
},
"id": "c5bf4a36-03b2-4dbd-ba0e-29d473321720",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
840,
620
],
"typeVersion": 1
},
{
"parameters": {
"content": "## Google Calendar - Get Events\n\nThis sub-node is a tool used by the AI agent. \nIts purpose is to **retrieve events based on the user input**. \nFor example: *\"Can you give me the events from last week about internal process ?\"*\n\nThe AI agent is designed to **use this tool only** when it has a **date range**. \nIf the user hasn’t provided a date range, the **AI agent will ask the user** for it.\n\nThe **variables** `{{ $fromAI('start_date') }}` and `{{ $fromAI('end_date') }}` are **dynamically filled by the AI**.\n",
"height": 720,
"width": 320,
"color": 5
},
"id": "6583a6b3-87b2-4a22-aeac-fa15c16b6dea",
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
"position": [
1240,
620
],
"typeVersion": 1
},
{
"parameters": {
"content": "## Google Calendar - Create Events\n\nThis sub-node is a tool used by the AI agent. \nIts purpose is to **create events based on the user input**. \nFor example: \"Can you create an event 'Quarter revenue meeting' on [date] from [hour] to [hour] ?\"\n\nThe AI agent is designed to **use this tool only** when it has a **date range**. \nIf the user hasn’t provided a **date range**, the AI agent will **ask the user** for it. \nThe variables `{{ $fromAI('start_date') }}` and `{{ $fromAI('end_date') }}` are dynamically filled by the AI.\n\nBefore creating the event, the AI agent will **confirm with the user** if the **title** and **description** of the event are correct. \nThe variables used for this are:\n- `{{ $fromAI('event_title') }}`\n- `{{ $fromAI('event_description') }}`\n",
"height": 720,
"width": 320,
"color": 5
},
"id": "e40da347-25d2-4fd1-a0be-a54b9cd88ba6",
"name": "Sticky Note5",
"type": "n8n-nodes-base.stickyNote",
"position": [
1640,
620
],
"typeVersion": 1
},
{
"parameters": {
"content": "## Having fun with it ? Here’s how to level up this AI agent ! \n\nThis workflow demonstrates **how easily you can set up an AI agent to call tools** for you using **n8n**. \nThe tasks here are **useful but very basic**. \n\nIf you want to **enhance the tool-calling capabilities**, consider the following:\n\n- Explore the **\"options\"** in the Google Calendar nodes to see additional features you can use. \n For example, let the AI agent add attendees to events it creates.\n\n- Implement the AI agent with your **teammates and link it to each calendar**. \n Use a `{{ $fromAI('') }}` variable for the calendar field and refine the prompts to suit your needs.\n\n- Add **more actions** for the AI agent to perform with the **Google Calendar API**, expanding its functionality.\n",
"height": 380,
"width": 720,
"color": 4
},
"id": "9e3e6900-bfda-46a3-bf03-6655e8105855",
"name": "Sticky Note6",
"type": "n8n-nodes-base.stickyNote",
"position": [
1240,
1380
],
"typeVersion": 1
}
],
"connections": {
"When chat message received": {
"main": [
[
{
"node": "Calendar AI Agent",
"type": "main",
"index": 0
}
]
]
},
"OpenAI Chat Model": {
"ai_languageModel": [
[
{
"node": "Calendar AI Agent",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Window Buffer Memory": {
"ai_memory": [
[
{
"node": "Calendar AI Agent",
"type": "ai_memory",
"index": 0
}
]
]
},
"Google Calendar - Get Events": {
"ai_tool": [
[
{
"node": "Calendar AI Agent",
"type": "ai_tool",
"index": 0
}
]
]
},
"Google Calendar - Create events": {
"ai_tool": [
[
{
"node": "Calendar AI Agent",
"type": "ai_tool",
"index": 0
}
]
]
}
},
"pinData": {},
"meta": {
"templateCredsSetupCompleted": true,
"instanceId": "b030d855f4155c47945573a7a9e77cc79230f61680495570418f0b9ca831da8a"
}
}
Share the output returned by the last node
Information on your n8n setup
- n8n version: - 1.93
- Database (default: SQLite):
- n8n EXECUTIONS_PROCESS setting (default: own, main):
- Running n8n via (Docker, npm, n8n cloud, desktop app): - Docker->Digitalocean
- Operating system:
i have changed but still have shift 3 hours