NetApp
Cluster : Configuration > System Tools > DateTime : Managing the system time (cluster administrators only) : Setting the time zone
Setting the time zone
You can use the Edit DateTime dialog box to set the time zone for your storage system. However, for an HA configuration, you cannot modify the time zone settings for the failed node or the partner node after a takeover occurs.
Steps 
1.
From the Home tab, double-click the appropriate storage system.
2.
Ensure that the left navigation pane displays the cluster hierarchy.
3.
In the navigation pane, click Configuration > System Tools > DateTime.
4.
Click Edit.
5.
Select the time zone.
6.
If you want to use the NTP service, select Enable NTP service and add the time server.
7.
Click OK.
8.
Verify the changes you made to the date and time settings.
Parent Topic: Managing the system time (cluster administrators only)
Related reference 
DateTime window