You will want to be sure that the time on your Cisco switches
is accurate. To do this you can enable
NTP and have your switch poll a time server to keep accurate time, just make sure
you have access to a time server.
One thing you need to do is set your timezone, I am central
time which looks like this:
Switch(config)# clock timezone CST -6
Next, if you recognize daylight savings time, you’ll want to
enable that:
Switch(config)# clock summer-time CDT recurring
Next, point at your time server:
Switch(config)# ntp server
This may take a minute to update, but you can verify you now
have the proper time you can type:
Switch# show clock