public static Datelist::validateDatelist(&$element, FormStateInterface

Defines Gregorian Calendar date values. Lots of helpful functions for use in massaging dates, specific to the Gregorian calendar system. The

public DateTimePlus::__construct($time = 'now', $timezone = NULL, $settings

public static DateTimePlus::datePad($value, $size = 2)

Wraps DateTime(). This class wraps the PHP DateTime class with more flexible initialization parameters, allowing a date to be created from an

public DateTimePlus::hasErrors() Detects

File core/lib/Drupal/Core/Datetime/DateFormatter.php, line 56 Class

public DateFormat::getPattern() Gets

public DrupalDateTime::format($format, $settings = array())

File core/lib/Drupal/Component/Datetime/DateTimePlus.php, line 30 Class