diff --git a/akka-actor-tests/src/test/scala/akka/event/LoggerSpec.scala b/akka-actor-tests/src/test/scala/akka/event/LoggerSpec.scala
index 821643ceac..afbce32b03 100644
--- a/akka-actor-tests/src/test/scala/akka/event/LoggerSpec.scala
+++ b/akka-actor-tests/src/test/scala/akka/event/LoggerSpec.scala
@@ -15,6 +15,7 @@ import akka.event.Logging._
 import akka.util.Helpers
 import akka.event.Logging.InitializeLogger
 import akka.event.Logging.Warning
+import java.text.SimpleDateFormat
 
 object LoggerSpec {
 
@@ -273,6 +274,17 @@ class LoggerSpec extends WordSpec with Matchers {
     }
   }
 
+  "StdOutLogger" must {
+    "format timestamp to with system default TimeZone" in {
+      val log = new StdOutLogger {}
+      val event = Info("test", classOf[String], "test")
+      // this was the format in Akka 2.4 and earlier
+      val dateFormat = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss.SSS")
+      val expected = dateFormat.format(new Date(event.timestamp))
+      log.timestamp(event) should ===(expected)
+    }
+  }
+
   "Ticket 3165 - serialize-messages and dual-entry serialization of LogEvent" must {
     "not cause StackOverflowError" in {
       implicit val s = ActorSystem("foo", ticket3165Config)
diff --git a/akka-actor/src/main/scala/akka/event/Logging.scala b/akka-actor/src/main/scala/akka/event/Logging.scala
index d53455cf0a..2b4cc35dbf 100644
--- a/akka-actor/src/main/scala/akka/event/Logging.scala
+++ b/akka-actor/src/main/scala/akka/event/Logging.scala
@@ -14,13 +14,15 @@ import akka.dispatch.RequiresMessageQueue
 import akka.event.Logging._
 import akka.util.ReentrantGuard
 import akka.util.Helpers.toRootLowerCase
-import akka.{AkkaException, ConfigurationException}
+import akka.{ AkkaException, ConfigurationException }
 
 import scala.annotation.implicitNotFound
 import scala.collection.immutable
 import scala.concurrent.Await
 import scala.language.existentials
-import scala.util.control.{NoStackTrace, NonFatal}
+import scala.util.control.{ NoStackTrace, NonFatal }
+import java.time.ZoneId
+import java.time.LocalDateTime
 
 /**
  * This trait brings log level handling to the EventStream: it reads the log
@@ -864,6 +866,7 @@ object Logging {
   class LoggerInitializationException(msg: String) extends AkkaException(msg)
 
   private val formatter = DateTimeFormatter.ofPattern("MM/dd/yyyy HH:mm:ss.SSS")
+  private val timeZone = ZoneId.systemDefault()
 
   trait StdOutLogger {
 
@@ -879,7 +882,7 @@ object Logging {
     // format: ON
 
     def timestamp(event: LogEvent): String = {
-      formatter.format(Instant.ofEpochMilli(event.timestamp))
+      formatter.format(LocalDateTime.ofInstant(Instant.ofEpochMilli(event.timestamp), timeZone))
     }
 
     def print(event: Any): Unit = event match {