> ## Documentation Index
> Fetch the complete documentation index at: https://signatureapi-daf4ee54.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Time zone

> Configure time zones for deliverables at the account or envelope level

The `timezone` property sets the time zone used for timestamps in the deliverable's audit log. It must be a valid [IANA Time Zone Database](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones) identifier (for example, `America/New_York` or `Europe/London`).

If not specified, the account's default time zone is used. Set your account default in the Settings section of the dashboard.

## Setting the time zone for an envelope

```json theme={null}
// POST https://api.signatureapi.com/v1/envelopes
// X-API-Key: key_test_...
// Content-Type: application/json

{
  "title": "Service Agreement",
  "timezone": "Europe/London",
  "documents": [
    //...
  ],
  "recipients": [
    //...
  ]
}
```

## Common identifiers

| Identifier            | Region            |
| --------------------- | ----------------- |
| `America/New_York`    | US East Coast     |
| `America/Los_Angeles` | US West Coast     |
| `America/Chicago`     | US Central        |
| `Europe/London`       | United Kingdom    |
| `Europe/Paris`        | Central Europe    |
| `Asia/Singapore`      | Singapore         |
| `Australia/Sydney`    | Eastern Australia |

<Note>Use named identifiers (like `America/New_York`) rather than fixed offsets (like `Etc/GMT+5`). Named identifiers handle daylight saving changes automatically.</Note>