JIRA (as version 6.4) stores due date as TimeStamp with Timezone (at least in Postgres, don't know in MySQL or other DBs).
This create a problem for those countries that have DST when returning to standard time: Due Dates (and in general all date picker custom fields) set while the DST was on, will show the previous day after returning to standard time.
I wonder if you have found any workaround for this problem.
Thanks in advance.