public static Datetime::processDatetime(&$element, FormStateInterface

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

public static DateHelper::monthNamesAbbrUntranslated()

protected DateFormatter::country() Returns

protected static Datetime::getHtml5TimeFormat($element)

public static DateHelper::weekDays($required = FALSE)

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