Below are listed Public Holidays for the January 2009-December 2010 period. 

2009
1 Jan New Year's Day.
7 Jan Victory Day.
9 Feb Meak Bochea Day.
8 Mar Women's Day.
14-16 Apr Cambodian New Year.
1 May Labour Day.
8 May Visaka Buja Day (Birth of Buddha).
12 May Royal Ploughing Day Ceremony.
13-15 May King Sihamoni's Birthday.
18 Jun Former Queen's Birthday.
18-20 Sep Pchum Ben Day.
24 Sep Constitution Day.
29 Oct Coronation Day.
31 Oct Former King Sihanouk's Birthday.
1-3 Nov Water Festival.
9 Nov Independence Day.
10 Dec Human Rights Day.

2010
1 Jan New Year's Day.
7 Jan Victory Day.
21 Feb Meak Bochea Day.
8 Mar Women's Day.
14-16 Apr Cambodian New Year.
1 May Labour Day. 
13-15 May King Sihamoni's Birthday.
28 Apr Visaka Buja Day (Birth of Buddha).
23 May Royal Ploughing Day Ceremony.
18 Jun Former Queen's Birthday.
24 Sep Constitution Day.
Sep-Oct* Pchum Ben Day.
29 Oct Coronation Day.
31 Oct Former King Sihanouk's Birthday.
Nov* Water Festival.
9 Nov Independence Day.
10 Dec Human Rights Day.

* Date to be confirmed.

The religious festivals are determined by the Buddhist lunar calendar and are therefore variable. Public holidays falling on a Saturday or Sunday are carried forward to the following working day.