> ## Documentation Index
> Fetch the complete documentation index at: https://docs.teamfollowup.ai/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Use the public API base URL: https://api.teamfollowup.ai/api.
> Authenticate public API requests with Authorization: Bearer YOUR_API_KEY.
> Use product-owned terms: agents, calls, campaigns, contacts, phone numbers, billing, and configuration.

# Contact timezone

> By default a campaign runs on your business timezone. Turn on contact timezone and it uses each lead's own local time for the calling hours, the agent, and any booking.

Every campaign has a timezone setting that decides whose clock it runs on. It is
off by default, which means the campaign runs on your business timezone.

## The two settings

| Setting                         | Whose clock the campaign uses                                                            |
| ------------------------------- | ---------------------------------------------------------------------------------------- |
| **Business timezone** (default) | Your account's timezone. Every lead is treated as if they live where your business does. |
| **Contact timezone** (on)       | Each lead's own timezone, read from their contact record.                                |

"9am to 5pm" only means something once you know whose 9am. A lead in New York and
a lead in Los Angeles are three hours apart. With contact timezone on, "9am to
5pm" becomes their local 9 to 5, not yours.

## What it changes

Turning on contact timezone does more than shift the calling window. The lead's
timezone flows into the whole call, so it changes three things at once:

| Where                     | Business timezone                                   | Contact timezone                                                                                                                                 |
| ------------------------- | --------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ |
| **Calling hours**         | The window runs on your business clock              | The window runs on the lead's local clock                                                                                                        |
| **What the agent knows**  | The agent treats the lead as being in your timezone | The agent knows the lead's real local time, so it greets them correctly and reasons about "this morning" or "tonight" the way they experience it |
| **Booking and callbacks** | Times are offered and set in your business timezone | Times are offered and set in the lead's local time                                                                                               |

That middle row is the one people forget. Even when two leads are dialed at the
same instant, the agent should say "good morning" to one and "good evening" to
the other. Contact timezone is what makes that right.

## Where the timezone comes from

The setting reads the timezone stored on the lead's contact record. A few things
worth knowing:

* If a contact has no timezone on file, that lead falls back to your business
  timezone.
* You can turn it on for a single campaign or for the whole project. The campaign
  setting wins.
* Turn it on whenever you dial across regions. Leave it off when all your leads
  sit in one timezone.

<Note>
  The timezone comes from the contact record in your CRM. See
  [how GoHighLevel captures a contact's timezone](https://help.gohighlevel.com/support/solutions/articles/155000001507-timezone-in-forms-and-surveys)
  for how that field gets set on forms and surveys.
</Note>