Get local datetime into Function node using moment.js
A quick example showing how to get the local date and time into a Function node using moment.js.
This relies on the GENERIC_TIMEZONE environment variable being correctly configured (see the docs here)
NOTE: In order for this to work, you must whitelist the moment library for use by setting the following environment variable:
NODE_FUNCTION_ALLOW_EXTERNAL=moment
For convenience, the Function code is as follows:
const moment = require('moment');
let date = moment().tz($env['GENERIC_TIMEZONE']);
let year = date.year();
let month = date.month(); // zero-indexed!
let day = date.date();
let hour = date.hours();
let minute = date.minutes();
let second = date.seconds();
let millisecond = date.millisecond();
let formatted = date.format('YYYY-MM-DD HH:mm:ss.SSS Z');
return [
{
json: {
utc: date,
year: year,
month: month, // zero-indexed!
day: day,
hour: hour,
minute: minute,
second: second,
millisecond: millisecond,
formatted: formatted
}
}
];
Get Local Datetime into Function Node Using Moment.js
This n8n workflow demonstrates how to effectively use the Moment.js library within an n8n Function node to retrieve and format the current local date and time. This is particularly useful for tasks requiring precise timestamping or date manipulation directly within a custom code block.
What it does
- Starts the workflow: The workflow begins execution.
- Executes a Function node: A Function node is used to run custom JavaScript code.
- It imports the
momentlibrary, which is available globally in n8n's Function node environment. - It then uses
moment().format()to get the current local date and time, formatted asYYYY-MM-DD HH:mm:ss. - The formatted datetime string is returned as the output of the Function node.
- It imports the
Prerequisites/Requirements
- An n8n instance (self-hosted or cloud).
- No external API keys or credentials are required for this specific workflow.
Setup/Usage
- Import the workflow:
- Copy the JSON content of this workflow.
- In your n8n instance, go to "Workflows" and click "New".
- Click on the three dots menu (
...) in the top right corner and select "Import from JSON". - Paste the copied JSON and click "Import".
- Activate the workflow:
- Once imported, you can activate the workflow by toggling the "Active" switch in the top right corner.
- Execute the workflow:
- Click "Execute Workflow" manually to run it and see the output in the Function node's execution results.
- The output will be a single item containing the current local datetime string.
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