Extends DateTimePlus(). This class extends the basic component and adds in Drupal-specific handling, like translation of the format() method

Language manager for retrieving the default langcode when none is specified. Type:

public DateFormat::isLocked() Determines

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

public DateFormatter::getSampleDateFormats($langcode = NULL, $timestamp

protected DateTimePlus::prepareTimezone($timezone)

A RFC7231 Compliant date. http://tools.ietf.o

public DateTimePlus::render() Renders

public static DateTimePlus::arrayToISO($array, $force_valid_date = FALSE)

The value of the timezone passed to the constructor. File core/lib/Drupal/Component/Datetime/DateTimePlus