Set the Time Manually or with NTP on Cisco IOS

Let’s take a look at how to set the clock on a Cisco device.

Display the Current Time

ISR4321> show clock
13:11:59.001 UTC Sun Mar 2 2025

Manually Set the Time

ISR4321# clock set 13:08:10 2 March 2025

Configure NTP

ISR4321(config)# ntp server 192.168.88.1

Set timezone and DST:

ISR4321# conf t
ISR4321(config)# clock timezone CET +1
ISR4321(config)# clock summer-time CEST recurring last Sunday March 02:00 last Sunday October 03:00
ISR4321(config)# end

After recurring, you can indicate when DST time starts. In this case, it reads something like “summer time starts the last Sunday of March at 02:00 in the morning; winter time starts the last Sunday of October at 03:00 in the morning.”