Event dates should display year
Context
When events get displayed on a page either in a view, or as an individual block, there are many options for how to format the date. Whether or not the year is included in this display can make it more or less clear if a date is current, or is a past date that is part of an archive or was forgotten about. This is particularly true f Drupal views, where event nodes can be automatically shifted from a current event view to an archival view.
Decision
When displaying events, the year should be included in the date display.
In Drupal views with event displays, the date should always be formatted to include the year as part of the date display.
Any design for an event display should accommodate the year as part of the date display.
Status
Consequences
If there is an existing view or other display on a website that contains a date without a year, it should be updated to include the year. It is acceptable to edit all existing event views and displays to add the year where it is missing.