public function get_bf_2018_start_time() {
		/**
		 * Allow filtering of the Black Friday sale start date, mainly for testing purposes.
		 *
		 * @since 4.7.23
		 *
		 * @param int $bf_start_date Unix time for Nov 20 2018 @ 6am UTC.
		 */
		return apply_filters( 'tribe_bf_2018_start_time', 1542693600 );
	}