Using the command line interface (CLI) : config : config system ntp
 
config system ntp
The config system ntp command allows you to configure automatic time setting using a network time protocol (NTP) server.
Syntax
config system ntp
set server <server_ip>
set status {enable | disable}
set sync_interval <minutes>
end
where:
Variable
Description
Default
server <server_ip>
Enter the IP address or fully qualified domain name of the NTP server.
No default.
status {enable | disable}
Enable or disable NTP time setting.
disable
sync_interval <minutes>
Enter how often, in minutes, the FortiDB system synchronizes its time with the NTP server.
60