NTP-Guide for Arch Linux

To ensure always-accurate Date & Time on Arch Linux, which is useful for dual-boot systems

systemd-timesyncd is a basic NTP client, suitable for keeping the system clock synchronized.

Enable and Start systemd-timesyncd:

bash

sudo systemctl enable systemd-timesyncd --now

Verify Time Sync Status:
bash
```
timedatectl status
```
Look for System clock synchronized: yes in the output.
Optional: Configure NTP Servers
By default, systemd-timesyncd uses public NTP servers. To customize them, edit the config file:
bash
```
sudo nano /etc/systemd/timesyncd.conf
```
Add or modify NTP servers under [Time], for example:
ini
```
[Time]
NTP=0.arch.pool.ntp.org 1.arch.pool.ntp.org
FallbackNTP=2.arch.pool.ntp.org 3.arch.pool.ntp.org
```

Restart systemd-timesyncd:

bash

sudo systemctl restart systemd-timesyncd

chrony is more accurate and has advanced features like handling intermittent network connections better than systemd-timesyncd.

Install chrony:
bash
```
sudo pacman -S chrony
```
Enable and Start chronyd:
bash
```
sudo systemctl enable chronyd --now
```
Verify Time Sync Status:
bash
```
chronyc tracking
```
This should display information on the current time sync status.
Configure NTP Servers (Optional):
Edit /etc/chrony.conf if you want to specify NTP servers.
Restart chronyd if Config is Changed:
bash
```
sudo systemctl restart chronyd
```
Verify Time Sync Status:
bash
```
timedatectl status
```
Look for System clock synchronized: yes in the output.

NTP-Guide for Arch Linux ​