diff --git a/wp-includes/query.php b/wp-includes/query.php
index e689828c21..255758b352 100644
--- a/wp-includes/query.php
+++ b/wp-includes/query.php
@@ -323,6 +323,8 @@ function is_date() {
 /**
  * Is the query for an existing day archive?
  *
+ * A conditional check to test whether the page is a date-based archive page displaying posts for the current day.
+ *
  * @since 1.5.0
  *
  * @global WP_Query $wp_query Global WP_Query instance.
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 463f8658c4..6f39ccab1b 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.0-alpha-42354';
+$wp_version = '5.0-alpha-42355';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.