diff --git a/Mf2/Parser.php b/Mf2/Parser.php
index 4fa03cd..4d72f94 100644
--- a/Mf2/Parser.php
+++ b/Mf2/Parser.php
@@ -856,6 +856,7 @@ public function parseDT(\DOMElement $dt, &$dates = array(), &$impliedTimezone =
 
 			$dtValue = unicodeTrim($dtValue);
 
+      // Store the date part so that we can use it when assembling the final timestamp if the next one is missing a date part
 			if (preg_match('/(\d{4}-\d{2}-\d{2})/', $dtValue, $matches)) {
 				$dates[] = $matches[0];
 			}
@@ -1032,7 +1033,7 @@ public function parseH(\DOMElement $e, $is_backcompat = false, $has_nested_mf =
 		foreach ($temp_dates as $propName => $data) {
 			foreach ( $data as $dtValue ) {
 				// var_dump(preg_match('/[+-]\d{2}(\d{2})?$/i', $dtValue));
-				if ( $impliedTimezone && preg_match('/[+-]\d{2}:?(\d{2})?$/i', $dtValue, $matches) == 0 ) {
+				if ( $impliedTimezone && preg_match('/(Z|[+-]\d{2}:?(\d{2})?)$/i', $dtValue, $matches) == 0 ) {
 					$dtValue .= $impliedTimezone;
 				}
 
diff --git a/tests/Mf2/ParseDTTest.php b/tests/Mf2/ParseDTTest.php
index 06e65fe..b3885c6 100644
--- a/tests/Mf2/ParseDTTest.php
+++ b/tests/Mf2/ParseDTTest.php
@@ -90,6 +90,42 @@ public function testParseDTHandlesTimeDatetimeAttr() {
 		$this->assertEquals('2012-08-05T14:50', $output['items'][0]['properties']['start'][0]);
 	}
 
+  /**
+   * @group parseDT
+   */
+  public function testParseDTHandlesTimeDatetimeAttrWithZ() {
+    $input = '<div class="h-card"><time class="dt-start" datetime="2012-08-05T14:50:00Z"></div>';
+    $parser = new Parser($input);
+    $output = $parser->parse();
+
+    $this->assertArrayHasKey('start', $output['items'][0]['properties']);
+    $this->assertEquals('2012-08-05T14:50:00Z', $output['items'][0]['properties']['start'][0]);
+  }
+
+  /**
+   * @group parseDT
+   */
+  public function testParseDTHandlesTimeDatetimeAttrWithTZOffset() {
+    $input = '<div class="h-card"><time class="dt-start" datetime="2012-08-05T14:50:00-0700"></div>';
+    $parser = new Parser($input);
+    $output = $parser->parse();
+
+    $this->assertArrayHasKey('start', $output['items'][0]['properties']);
+    $this->assertEquals('2012-08-05T14:50:00-0700', $output['items'][0]['properties']['start'][0]);
+  }
+
+  /**
+   * @group parseDT
+   */
+  public function testParseDTHandlesTimeDatetimeAttrWithTZOffset2() {
+    $input = '<div class="h-card"><time class="dt-start" datetime="2012-08-05T14:50:00-07:00"></div>';
+    $parser = new Parser($input);
+    $output = $parser->parse();
+
+    $this->assertArrayHasKey('start', $output['items'][0]['properties']);
+    $this->assertEquals('2012-08-05T14:50:00-07:00', $output['items'][0]['properties']['start'][0]);
+  }
+
 	/**
 	 * @group parseDT
 	 */