public static function datetime_from_format( $format, $date ) {
			// Reverse engineer the relevant date formats
			$keys = array(
				// Year with 4 Digits
				'Y' => array( 'year', '\d{4}' ),

				// Year with 2 Digits
				'y' => array( 'year', '\d{2}' ),

				// Month with leading 0
				'm' => array( 'month', '\d{2}' ),

				// Month without the leading 0
				'n' => array( 'month', '\d{1,2}' ),

				// Month ABBR 3 letters
				'M' => array( 'month', '[A-Z][a-z]{2}' ),

				// Month Name
				'F' => array( 'month', '[A-Z][a-z]{2,8}' ),

				// Day with leading 0
				'd' => array( 'day', '\d{2}' ),

				// Day without leading 0
				'j' => array( 'day', '\d{1,2}' ),

				// Day ABBR 3 Letters
				'D' => array( 'day', '[A-Z][a-z]{2}' ),

				// Day Name
				'l' => array( 'day', '[A-Z][a-z]{5,8}' ),

				// Hour 12h formatted, with leading 0
				'h' => array( 'hour', '\d{2}' ),

				// Hour 24h formatted, with leading 0
				'H' => array( 'hour', '\d{2}' ),

				// Hour 12h formatted, without leading 0
				'g' => array( 'hour', '\d{1,2}' ),

				// Hour 24h formatted, without leading 0
				'G' => array( 'hour', '\d{1,2}' ),

				// Minutes with leading 0
				'i' => array( 'minute', '\d{2}' ),

				// Seconds with leading 0
				's' => array( 'second', '\d{2}' ),
			);

			$date_regex = "/{$keys['Y'][1]}-{$keys['m'][1]}-{$keys['d'][1]}( {$keys['H'][1]}:{$keys['i'][1]}:{$keys['s'][1]})?$/";

			// if the date is already in Y-m-d or Y-m-d H:i:s, just return it
			if ( preg_match( $date_regex, $date ) ) {
				return $date;
			}


			// Convert format string to regex
			$regex = '';
			$chars = str_split( $format );
			foreach ( $chars as $n => $char ) {
				$last_char = isset( $chars[ $n - 1 ] ) ? $chars[ $n - 1 ] : '';
				$skip_current = '\\' == $last_char;
				if ( ! $skip_current && isset( $keys[ $char ] ) ) {
					$regex .= '(?P<' . $keys[ $char ][0] . '>' . $keys[ $char ][1] . ')';
				} elseif ( '\\' == $char ) {
					$regex .= $char;
				} else {
					$regex .= preg_quote( $char );
				}
			}

			$dt = array();

			// Now try to match it
			if ( preg_match( '#^' . $regex . '$#', $date, $dt ) ) {
				// Remove unwanted Indexes
				foreach ( $dt as $k => $v ) {
					if ( is_int( $k ) ) {
						unset( $dt[ $k ] );
					}
				}

				// We need at least Month + Day + Year to work with
				if ( ! checkdate( $dt['month'], $dt['day'], $dt['year'] ) ) {
					return false;
				}
			} else {
				return false;
			}

			$dt['month'] = str_pad( $dt['month'], 2, '0', STR_PAD_LEFT );
			$dt['day'] = str_pad( $dt['day'], 2, '0', STR_PAD_LEFT );

			$formatted = '{year}-{month}-{day}' . ( isset( $dt['hour'], $dt['minute'], $dt['second'] ) ? ' {hour}:{minute}:{second}' : '' );
			foreach ( $dt as $key => $value ) {
				$formatted = str_replace( '{' . $key . '}', $value, $formatted );
			}

			return $formatted;
		}