Test, validate and match regular expressions
This regex matches Dutch-language travel itinerary sections from JETAIR booking confirmations. It captures arrival dates in DD/MM/YYYY format following any day of the week in Dutch (maandag through zondag). The pattern looks for 'Aankomst:' (arrival) followed by a weekday and date, then 'Vertrek:' (departure) with specific spacing. It's useful for extracting structured date information from Dutch travel documents.