Log in to the pfSense web GUI
Go to Diagnostics > Command Prompt
Run `service ntpd stop`
Run `ntpdate -u pool.ntp.org`
Run `service ntpd start`
Or go to Status > Services
Restart the `ntpd` service
Verify time under Status > System Logs > System > General or the dashboard clock
If using NTP servers in pfSense, check System > General Setup and System > NTP for correct server settings