WordPress at a glance
function is not described

wp_xmlrpc_server::_convert_date_gmt() protected WP 1.0

Convert a WordPress GMT date string to an IXR_Date object.

{} It's a method of the class: wp_xmlrpc_server{}

No Hooks.

Return

IXR_Date. IXR_Date object.

Usage

// protected - for code of main (parent) or child class
$result = $this->_convert_date_gmt( $date_gmt, $date );
$date_gmt(string) (required)
WordPress GMT date string.
$date(string) (required)
Date string.

Code of wp_xmlrpc_server::_convert_date_gmt() WP 5.5.3

<?php
protected function _convert_date_gmt( $date_gmt, $date ) {
	if ( '0000-00-00 00:00:00' !== $date && '0000-00-00 00:00:00' === $date_gmt ) {
		return new IXR_Date( get_gmt_from_date( mysql2date( 'Y-m-d H:i:s', $date, false ), 'Ymd\TH:i:s' ) );
	}
	return $this->_convert_date( $date_gmt );
}