---
title: "NTP"
slug: "ntp"
updated: 2025-12-31T06:46:02Z
published: 2025-12-31T06:46:02Z
canonical: "docs.fmad.io/ntp"
---

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

# NTP

Time synchronization via NTP is configured at the factory by default. This uses the `pool.ntp.org` time servers.

---

## Custom Configuration

**NOTE: requires 2025Q4 release or later**

Customization of NTPD can be done using a custom ntpd.conf configuration file.

### Step 1) Start with default config

The default configuration file is located at

```plaintext
/opt/fmadio/etc_ro/ntpd_ntp.conf
```

Copy this to

```plaintext
cp /opt/fmadio/etc_ro/ntpd_ntp.conf /opt/fmadio/etc/ntpd.conf
```

### Step 2) Customize

Edit the file

```plaintext
/opt/fmadio/etc/ntpd.conf
```

Add in servers and any additional custom configuration settings.

### Step 3) Restart

Restart NTP via

```plaintext
sudo killall time_ntp.lua
```

### Step 4) Finish

Wait for the 1min cronjob to automatically restart the NTPD server process.