# Time Zone Filter: Reach Contacts in Working Hours

The **Time zone** filter lets you build a contact table around the clock your prospects actually live in. Instead of guessing which contacts are at their desk, you can filter by a named time zone, by the contact's own local time, or return only contacts who are currently inside working hours.

Until now the closest option was filtering by **Location**, which doesn't line up with time zones — one country can span several zones, and one zone can span several countries. Time zone filters by the thing that actually decides whether someone picks up.

## How to use the Time zone filter

1. Open the Workspace filter panel and click **Filter contacts**
2. In the filter panel, open the **CONTACTS** group
3. Select **Time zone**
4. Choose how you want to filter:
  - **Timezone** — pick a location, for example **Chicago, Illinois**
  - **Local time** — filter by the contact's own clock instead of a named zone
5. To return only contacts who are at their desk right now, tick **Working Hours Only** and set a **Start** and **End** range


Results refresh in the table on the right as you apply the filter. Time zone stacks with **Job title**, **Seniority**, **Location** and the rest of your filters, and you can clear it at any time.

## Key concepts

- **Timezone** — a named zone selected by location. Use this when you're building a call block for a specific region.
- **Local time** — the contact's own clock. Use this when you care about the hour a contact is in, regardless of which named zone produces it.
- **Working Hours Only** — a toggle that returns only contacts whose current local time falls inside the **Start** and **End** range you set. Lusha does the time-zone math for you, so you don't have to calculate it row by row.


blockquote
💡 Note: The **Time zone** filter is currently available in the Workspace search filter panel only. It is not yet available in the Lusha API or the Lusha MCP server.

## How it fits your workflow

Cold calling depends on local time. A rep working a morning block needs contacts who are also in their morning — not people about to sit down to dinner. Use **Time zone** to:

- Build a table for the hours you're actually dialing, so a call block matches your day
- Prioritize contacts who are reachable now with **Working Hours Only**
- Target a region precisely, without relying on country or city as a stand-in for the clock


## Related articles

- [Using Workspace Filters: Contact and Company Filter Panel](/user-guide/building-your-workspace-tables/using-workspace-filters-contact-and-company-filter-panel)
- [Workspace: AI-Powered Table Building](/user-guide/introduction-and-getting-started/workspace-ai-powered-table-building)


Now you're ready to dial the people who are actually at their desk.