Date Pickers select Wrong Year
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Summary
Symptoms
Whenever a date is selected through a date-picker, JIRA assigns the date to the wrong year.
Diagnosis
Users may report that the date value is swapped for the year value.
Cause
This is caused by a mismatch between the Date Display format and the Date Picker format.
Solution
Resolution
Review date formats in Date and Time Formats and compare to formats in Configuring Advanced Settings.
If settings don't match, you may find that there are buttons to assist with reverting to defaults:
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