Day Date Month Holiday Wednesday 1 Jan International New Year's Day Tuesday 7 Jan Victory over Genocide Day Monday 14 Apr Khmer New Year Day Tuesday 15 Apr Khmer New Year Day Wednesday 16 Apr Khmer New Year Day Thursday 1 May International Labor's Day Wednesday 14 May Birthday of His Majesty King Norodom Sihamoni Thursday 15 May Royal Ploughing Ceremony Wednesday 18 Jun Birthday of Her Majesty the Queen-Mother Norodom Monineath Sihanouk Monday 22 Sep Pchum Ben Day Tuesday 23 Sep Pchum Ben Day Wednesday 24 Sep Constitutional Day Wednesday 15 Oct Commemoration Day of Late King Norodom Sihanouk Wednesday 29 Oct Coronation Day of His Majesty King Norodom Sihamoni Tuesday 4 Nov Water Festival Ceremony Wednesday 5 Nov Water Festival Ceremony Thursday 6 Nov Water Festival Ceremony Monday 29 Dec Peace Day in Cambodia Source: Cambodia Securities Exchange