Customer portal shows different time zone when creating a ticket or adding a comment
Platform Notice: Cloud - This article applies to Atlassian products on the cloud platform.
Summary
When a portal-only customer raises a ticket or adds a comment via the customer portal, they might see a different Date and Time for the same.
Cause
When a new customer is invited to a Service Management project, their time zone will inherit the Default user time zone set via the Cog icon 
> System > General Configuration.
If you click on the Cog icon 
and don't see the options from the screenshot above, it means that you don't have Administer Jira permission.
Customer profile:
Solution
Portal-only and Atlassian accounts can be identified by the avatars:
- Gray avatar it's the default avatar for portal-only accounts.
- Avatar containing the initials or if it’s a custom picture then, it’s an Atlassian account.
Portal-only accounts
Customers can change their timezone via the customer portal by accessing Avatar > Profile.
Once the changes are saved, the details will automatically update on all tickets.
Atlassian accounts
The time zone can be changed via their Atlassian account profile at https://id.atlassian.com/manage-profile/account-preferences.
