Change Locale for Jira server
Some of the functionalities in JIRA depends on the locale that is set for the JAVA environment. For example the function startOfWeek in JIRA JQL Queries (Advanced Searching). The default value of locale settings will be picked up from the locale settings set in the operating system.
Changing the Locale
In order to change the locale settings the recommended way is to add the additional arguments
user.country to the JVM parameters. The details steps for adding the parameters to JIRA is explained in this article - Setting Properties and Options on Startup
An example for setting the locale to Germany is given below:
The Internationalization: Understanding Locale in the Java Platform documentation from Oracle contains further information on the different codes to be set for language and country codes.
Commonly used Locales
Commonly used language codes:
Examples of commonly used Country codes: