Ticket #60105: 60105.diff

src/wp-includes/script-loader.php

@@ -417 +417 @@
                 $timezone_abbr = $timezone_date->format( 'T' );
         }
 
+        $gmt_offset = get_option( 'gmt_offset', 0 );
+
         $scripts->add_inline_script(
                 'wp-date',
                 sprintf(
@@ -473 +475 @@
                                                 'datetimeAbbreviated' => __( 'M j, Y g:i a' ),
                                         ),
                                         'timezone' => array(
-                                                'offset' => (float) get_option( 'gmt_offset', 0 ),
-                                                'string' => $timezone_string,
-                                                'abbr'   => $timezone_abbr,
+                                                'offset'          => (float) $gmt_offset,
+                                                'offsetFormatted' => str_replace( array( '.25', '.5', '.75' ), array( ':15', ':30', ':45' ), (string) $gmt_offset ),
+                                                'string'          => $timezone_string,
+                                                'abbr'            => $timezone_abbr,
                                         ),
                                 )
                         )