We wished!... no, annual holidays is 23 days (roughly four weeks counting weekends) but these days people tend to take a couple of weeks in August and the rest spread over the year (especially Easter and X-mas). But having part of your staff off in August does indeed slow down some projects/services furthermore, as in this case, when half of your customers of that bus line will also be on holiday. Hence the reason some attractions not in the most touristy areas are closed in August. But as said, the bus is working every month except for August :))