Index: branches/5.2.x/core/install/upgrades.sql
===================================================================
diff -u -r15433 -r15436
--- branches/5.2.x/core/install/upgrades.sql	(.../upgrades.sql)	(revision 15433)
+++ branches/5.2.x/core/install/upgrades.sql	(.../upgrades.sql)	(revision 15436)
@@ -2763,3 +2763,12 @@
 ALTER TABLE ScheduledTasks ADD RunSchedule VARCHAR(255) NOT NULL DEFAULT '* * * * *' AFTER Event;
 DELETE FROM UserPersistentSessionData WHERE VariableName = 'scheduled-task[Default]columns_.';
 DELETE FROM LanguageLabels WHERE PhraseKey = 'LA_FLD_RUNINTERVAL';
+
+ALTER TABLE Languages
+	ADD ShortDateFormat VARCHAR(255) NOT NULL DEFAULT 'm/d' AFTER DateFormat,
+	ADD ShortTimeFormat VARCHAR(255) NOT NULL DEFAULT 'g:i A' AFTER TimeFormat;
+
+UPDATE Languages
+SET
+	ShortDateFormat = REPLACE(REPLACE(DateFormat, '/Y', ''), '/y', ''),
+	ShortTimeFormat = REPLACE(TimeFormat, ':s', '');
