King Willem-Alexander invites on the occasion of his fiftieth birthday 150 Dutch to dinner at the Royal Palace in Amsterdam on Friday, April 28th. After dinner, the palacewill be  50 hours continuously open to the public. Her Majesty Queen Máxima is also present during the evening.

Through the Facebook page of the royal family, the king invites all residents of the Kingdom of the Netherlands in which, like him, his birthday will be on April 27 this year and achieve a jubilee year to sign up via the website http://www.WA50.nl.  You can sign up from the age of 20 years. The registration period closes on 3 March 2017 .150 people are selected by lottery .

After the dinner, start the opening of the Royal Palace in Amsterdam. 50 hours has shown a special programming related to life in the Kingdom of the Netherlands for the past 50 years. The start of the opening is marked with a festive time at the Dam. The opening starts on Friday April 28 at 22:00 and ends on Sunday April 30 at 00:00.