I had been to the queen 's day in netherlands . One of the most celebrated days by dutch . The occasion is to celebrate the birth day of Queen Victoria whose birthday falls on 30th April (29th april if apr 30th is a sunday ) . I discovered wikipedia an amazing site for instead updation of your knowledge on any thing ..starting with this..let me give you the link for Queen's day (http://en.wikipedia.org/wiki/Queens_Day)

I got up late today , as was tired with the whole day walking along the streets of Amsterdam.
Every one was enjoying the day . Girls ,boys , aged , young everyone drinking beer as water to get them into good moods. Ganja (grass) smoking lot of activity on the streets.