diff --git a/core/lib/Drupal/Core/Datetime/DateFormatter.php b/core/lib/Drupal/Core/Datetime/DateFormatter.php
index a20de8a..06754ff 100644
--- a/core/lib/Drupal/Core/Datetime/DateFormatter.php
+++ b/core/lib/Drupal/Core/Datetime/DateFormatter.php
@@ -193,24 +193,27 @@ public function formatInterval($interval, $granularity = 2, $langcode = NULL) {
   }
 
   /**
-   * Provides all date format characters value for given timestamp.
+   * Provides values for all date formatting characters for a given timestamp.
    *
    * @param string|null $langcode
-   *   (optional) Language code of date format, if different from site
+   *   (optional) Language code of the date format, if different from the site
    *   default language.
    * @param int|null $timestamp
-   *   (optional) Unix timestamp to format. Use REQUEST_TIME if not provided.
+   *   (optional) THe Unix timestamp to format. REQUEST_TIME is used by default.
    * @param string|null $timezone
-   *   (optional) String timezone, if different from site default timezone.
+   *   (optional) The timezone to use, if different from the site's default
+   *   timezone.
    *
    * @return array
-   *   An array of formatted date value indexed by date character.
+   *   An array of formatted date values, indexed by the date format character.
+   *
+   * @see date()
    */
   public function getSampleDateFormats($langcode = NULL, $timestamp = NULL, $timezone = NULL) {
     $language_code = $langcode ?: NULL;
     $ts = $timestamp ?: REQUEST_TIME;
     $tz = $timezone ?: NULL;
-    // All date format characters in PHP.
+    // All date format characters for the PHP date() function.
     $date_characters = 'dDjlNSwzWFmMntLoYyaABgGhHisueIOPTZcrU';
     $date_chars = str_split($date_characters);
     $date_elements = array_combine($date_chars, $date_chars);
diff --git a/core/modules/config_translation/src/FormElement/ElementInterface.php b/core/modules/config_translation/src/FormElement/ElementInterface.php
index c9fb0b9..e58ce86 100644
--- a/core/modules/config_translation/src/FormElement/ElementInterface.php
+++ b/core/modules/config_translation/src/FormElement/ElementInterface.php
@@ -71,7 +71,7 @@ public function getTranslationBuild(LanguageInterface $source_language, Language
   public function setConfig(Config $base_config, LanguageConfigOverride $config_translation, $config_values, $base_key = NULL);
 
   /**
-   * Allows to provide form attributes for the configuration form.
+   * Allows providing form attributes for the configuration form.
    *
    * @return array
    *   An array of form attributes.