public function is_on_sale( Ticket_Object $ticket ): bool {
		$sale_checked = get_post_meta( $ticket->ID, static::$sale_price_checked_key, true );

		if ( ! $sale_checked ) {
			return false;
		}

		$sale_price = get_post_meta( $ticket->ID, static::$sale_price_key, true );

		if ( empty( $sale_price ) ) {
			return false;
		}

		$start_date = get_post_meta( $ticket->ID, static::$sale_price_start_date_key, true );
		$end_date   = get_post_meta( $ticket->ID, static::$sale_price_end_date_key, true );

		if ( empty( $start_date ) && empty( $end_date ) ) {
			return true;
		}

		// Using the ticket's date helper to ensure the timezone for events are handled correctly.
		$start = $ticket->get_date( $start_date );
		$end   = $ticket->get_date( $end_date );
		$now   = $ticket->get_date( 'today' );

		// If the sale has no end date and the start date is in the past, the sale is on.
		if ( $start <= $now && empty( $end ) ) {
			return true;
		}

		return $now >= $start && $now <= $end;
	}