diff --git a/library/log4php/pattern/LoggerPatternConverterDate.php b/library/log4php/pattern/LoggerPatternConverterDate.php
new file mode 100644
--- /dev/null
+++ b/library/log4php/pattern/LoggerPatternConverterDate.php
@@ -0,0 +1,91 @@
+<?php
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * @package log4php
+ */
+
+/**
+ * Returns the date/time of the logging request.
+ *
+ * Option: the datetime format, as used by the date() function. If
+ * the option is not given, the default format 'c' will be used.
+ *
+ * There are several "special" values which can be given for this option:
+ * 'ISO8601', 'ABSOLUTE' and 'DATE'.
+ *
+ * @package log4php
+ * @subpackage pattern
+ * @version $Revision: 1326626 $
+ * @since 2.3
+ */
+class LoggerPatternConverterDate extends LoggerPatternConverter {
+
+    const DATE_FORMAT_ISO8601 = 'c';
+
+    const DATE_FORMAT_ABSOLUTE = 'H:i:s';
+
+    const DATE_FORMAT_DATE = 'd M Y H:i:s.u';
+
+    private $format = self::DATE_FORMAT_ISO8601;
+
+    private $specials = array(
+        'ISO8601' => self::DATE_FORMAT_ISO8601,
+        'ABSOLUTE' => self::DATE_FORMAT_ABSOLUTE,
+        'DATE' => self::DATE_FORMAT_DATE,
+    );
+
+    private $useLocalDate = false;
+
+    public function activateOptions() {
+
+        // Parse the option (date format)
+        if (!empty($this->option)) {
+            if (isset($this->specials[$this->option])) {
+                $this->format = $this->specials[$this->option];
+            } else {
+                $this->format = $this->option;
+            }
+        }
+
+        // Check whether the pattern contains milliseconds (u)
+        if (preg_match('/(?<!\\\\)u/', $this->format)) {
+            $this->useLocalDate = true;
+        }
+    }
+
+    public function convert(LoggerLoggingEvent $event) {
+        if ($this->useLocalDate) {
+            return $this->date($this->format, $event->getTimeStamp());
+        }
+        return date($this->format, $event->getTimeStamp());
+    }
+
+    /**
+     * Currently, PHP date() function always returns zeros for milliseconds (u)
+     * on Windows. This is a replacement function for date() which correctly
+     * displays milliseconds on all platforms.
+     *
+     * It is slower than PHP date() so it should only be used if necessary.
+     */
+    private function date($format, $utimestamp) {
+        $timestamp = floor($utimestamp);
+        $ms = floor(($utimestamp - $timestamp) * 1000);
+        $ms = str_pad($ms, 3, '0', STR_PAD_LEFT);
+
+        return date(preg_replace('`(?<!\\\\)u`', $ms, $format), $timestamp);
+    }
+}