I'm working on an implementation that uses the Blog module and another module called LargeBlog (https://github.com/icecaster/silverstripe-largeblog). The LargeBlog module creates a ModelAdmin using the BlogEntry class and also adds a DataExtension for the BlogEntry class to update the configuration for the ModelAdmin. What I'm trying to do is add the Date field for BlogEntry to $summary_fields, which works just fine, and update the formatting of the date shown on the GridField. However, I'm banging my head against a wall trying to figure out how to actually format the date. Any help would be most appreciated. :D