diff --git a/wp-admin/update-core.php b/wp-admin/update-core.php
index 3e48bae0da..b41f7285dc 100644
--- a/wp-admin/update-core.php
+++ b/wp-admin/update-core.php
@@ -1096,7 +1096,7 @@ if ( 'upgrade-core' === $action ) {
 	$current           = get_site_transient( 'update_core' );
 
 	if ( $current && isset( $current->last_checked ) ) {
-		$last_update_check = $current->last_checked + get_option( 'gmt_offset' ) * HOUR_IN_SECONDS;
+		$last_update_check = $current->last_checked + (int) ( (float) get_option( 'gmt_offset' ) * HOUR_IN_SECONDS );
 	}
 
 	echo '<h2 class="wp-current-version">';
diff --git a/wp-includes/bookmark-template.php b/wp-includes/bookmark-template.php
index d5878887d9..af48fbfdca 100644
--- a/wp-includes/bookmark-template.php
+++ b/wp-includes/bookmark-template.php
@@ -90,7 +90,7 @@ function _walk_bookmarks( $bookmarks, $args = '' ) {
 					__( 'Last updated: %s' ),
 					gmdate(
 						get_option( 'links_updated_date_format' ),
-						$bookmark->link_updated_f + ( get_option( 'gmt_offset' ) * HOUR_IN_SECONDS )
+						$bookmark->link_updated_f + (int) ( (float) get_option( 'gmt_offset' ) * HOUR_IN_SECONDS )
 					)
 				);
 				$title .= ')';
diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php
index 8aec375bc8..d1938872ed 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php
@@ -1816,7 +1816,7 @@ class WP_REST_Posts_Controller extends WP_REST_Controller {
 			 * with the site's timezone offset applied.
 			 */
 			if ( '0000-00-00 00:00:00' === $post->post_modified_gmt ) {
-				$post_modified_gmt = gmdate( 'Y-m-d H:i:s', strtotime( $post->post_modified ) - ( get_option( 'gmt_offset' ) * HOUR_IN_SECONDS ) );
+				$post_modified_gmt = gmdate( 'Y-m-d H:i:s', strtotime( $post->post_modified ) - (int) ( (float) get_option( 'gmt_offset' ) * HOUR_IN_SECONDS ) );
 			} else {
 				$post_modified_gmt = $post->post_modified_gmt;
 			}
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 87e3028830..de1d58f1aa 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.7-alpha-59063';
+$wp_version = '6.7-alpha-59064';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
diff --git a/wp-mail.php b/wp-mail.php
index c405f6969e..7b18dd4ad1 100644
--- a/wp-mail.php
+++ b/wp-mail.php
@@ -44,7 +44,7 @@ if ( $last_checked ) {
 
 set_transient( 'mailserver_last_checked', true, WP_MAIL_INTERVAL );
 
-$time_difference = get_option( 'gmt_offset' ) * HOUR_IN_SECONDS;
+$time_difference = (int) ( (float) get_option( 'gmt_offset' ) * HOUR_IN_SECONDS );
 
 $phone_delim = '::';