Date Holiday
1 Jan New Year's Day
8 Apr Easter
9 Apr Easter Monday
30 Apr Queen's Day (Koninginnedag)
5 May Liberation day
17 May Ascension Day
28 May Whit Monday
25 Dec Christmas Day
26 Dec 2nd Day of Christmas
Source: http://www.oanda.com
http://www.qppstudio.net/bankholidays2007/netherlands.htm