diff --git a/core/src/main/java/org/elasticsearch/common/rounding/Rounding.java b/core/src/main/java/org/elasticsearch/common/rounding/Rounding.java
index ad9f926e881..50461d6184a 100644
--- a/core/src/main/java/org/elasticsearch/common/rounding/Rounding.java
+++ b/core/src/main/java/org/elasticsearch/common/rounding/Rounding.java
@@ -128,15 +128,38 @@ public abstract class Rounding implements Streamable {
         @Override
         public long round(long utcMillis) {
             long rounded = field.roundFloor(utcMillis);
-            if (timeZone.isFixed() == false && timeZone.getOffset(utcMillis) != timeZone.getOffset(rounded)) {
-                // in this case, we crossed a time zone transition. In some edge
-                // cases this will
-                // result in a value that is not a rounded value itself. We need
-                // to round again
-                // to make sure. This will have no affect in cases where
-                // 'rounded' was already a proper
-                // rounded value
-                rounded = field.roundFloor(rounded);
+            if (timeZone.isFixed() == false) {
+                // special cases for non-fixed time zones with dst transitions
+                if (timeZone.getOffset(utcMillis) != timeZone.getOffset(rounded)) {
+                    /*
+                     * the offset change indicates a dst transition. In some
+                     * edge cases this will result in a value that is not a
+                     * rounded value before the transition. We round again to
+                     * make sure we really return a rounded value. This will
+                     * have no effect in cases where we already had a valid
+                     * rounded value
+                     */
+                    rounded = field.roundFloor(rounded);
+                } else {
+                    /*
+                     * check if the current time instant is at a start of a DST
+                     * overlap by comparing the offset of the instant and the
+                     * previous millisecond. We want to detect negative offset
+                     * changes that result in an overlap
+                     */
+                    if (timeZone.getOffset(rounded) < timeZone.getOffset(rounded - 1)) {
+                        /*
+                         * we are rounding a date just after a DST overlap. if
+                         * the overlap is smaller than the time unit we are
+                         * rounding to, we want to add the overlapping part to
+                         * the following rounding interval
+                         */
+                        long previousRounded = field.roundFloor(rounded - 1);
+                        if (rounded - previousRounded < field.getDurationField().getUnitMillis()) {
+                            rounded = previousRounded;
+                        }
+                    }
+                }
             }
             assert rounded == field.roundFloor(rounded);
             return rounded;
diff --git a/core/src/test/java/org/elasticsearch/common/rounding/TimeZoneRoundingTests.java b/core/src/test/java/org/elasticsearch/common/rounding/TimeZoneRoundingTests.java
index 159b8693b84..2c1c480c6a5 100644
--- a/core/src/test/java/org/elasticsearch/common/rounding/TimeZoneRoundingTests.java
+++ b/core/src/test/java/org/elasticsearch/common/rounding/TimeZoneRoundingTests.java
@@ -514,6 +514,44 @@ public class TimeZoneRoundingTests extends ESTestCase {
         }
     }
 
+    /**
+     * tests for dst transition with overlaps and day roundings.
+     */
+    public void testDST_END_Edgecases() {
+        // First case, dst happens at 1am local time, switching back one hour.
+        // We want the overlapping hour to count for the next day, making it a 25h interval
+
+        DateTimeUnit timeUnit = DateTimeUnit.DAY_OF_MONTH;
+        DateTimeZone tz = DateTimeZone.forID("Atlantic/Azores");
+        Rounding rounding = new Rounding.TimeUnitRounding(timeUnit, tz);
+
+        // Sunday, 29 October 2000, 01:00:00 clocks were turned backward 1 hour
+        // to Sunday, 29 October 2000, 00:00:00 local standard time instead
+
+        long midnightBeforeTransition = time("2000-10-29T00:00:00", tz);
+        long nextMidnight = time("2000-10-30T00:00:00", tz);
+
+        assertInterval(midnightBeforeTransition, nextMidnight, rounding, 25 * 60, tz);
+
+        // Second case, dst happens at 0am local time, switching back one hour to 23pm local time.
+        // We want the overlapping hour to count for the previous day here
+
+        tz = DateTimeZone.forID("America/Lima");
+        rounding = new Rounding.TimeUnitRounding(timeUnit, tz);
+
+        // Sunday, 1 April 1990, 00:00:00 clocks were turned backward 1 hour to
+        // Saturday, 31 March 1990, 23:00:00 local standard time instead
+
+        midnightBeforeTransition = time("1990-03-31T00:00:00.000-04:00");
+        nextMidnight = time("1990-04-01T00:00:00.000-05:00");
+        assertInterval(midnightBeforeTransition, nextMidnight, rounding, 25 * 60, tz);
+
+        // make sure the next interval is 24h long again
+        long midnightAfterTransition = time("1990-04-01T00:00:00.000-05:00");
+        nextMidnight = time("1990-04-02T00:00:00.000-05:00");
+        assertInterval(midnightAfterTransition, nextMidnight, rounding, 24 * 60, tz);
+    }
+
     /**
      * Test that time zones are correctly parsed. There is a bug with
      * Joda 2.9.4 (see https://github.com/JodaOrg/joda-time/issues/373)