The current timezone in Moscow is GMT +3 hours, but JIRA still shows it as +4 Moscow.jpg. This is causing time displays to be off for users with their default timezones set to Moscow +4.

Additionally, updating the JVM's timezone data using the tzupdater tool doesn't seem to help. It fixes the display issue where Moscow will now show +3, but all the dates and times displayed in JIRA are still ahead by 1 hour.

Workaround
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1. Change the timezone settings (profile or General Configuration) to use GMT OFFSET +03:00 OR
2. Update joda-time in atlassian-jira/WEB-INF/lib to last version (2.5). Download the library from here. Next, update JAVA's timezone data using the tzupdater tool: http://www.oracle.com/technetwork/java/javase/tzupdater-readme-136440.html