Split off from Bug 27858 comment 6:
Its unclear if this bug is the result of people being confused by localizing the time in the log excerpt (/me personally has never liked how we only modify some timestamps for timezone),
Whenever time is used in MediaWiki, it should be shown in a consistent matter.
This is a tracking bug to find areas where the display of time is not UTC or however we decide time should be displayed (e.g. the user's time zone)