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

2009
1 Jan New Year. 
25-27 Jan Sollal (Lunar New Year).
1 Mar Independence Movement Day.
1 May Labour Day (not an official public holiday but many companies and financial markets close).
5 May Children's Day. 
9 May Buddha's Birthday.
6 Jun Memorial Day. 
15 Aug Liberation Day.
2-4 Oct Harvest Moon (Chuseok).
3 Oct National Foundation Day.
25 Dec Christmas Day.

2010
1 Jan New Year. 
Jan/Feb* Sollal (Lunar New Year).
1 Mar Independence Movement Day.
1 May Labour Day (not an official public holiday but many companies and financial markets close).
5 May Children's Day. 
28 Apr Buddha's Birthday.
6 Jun Memorial Day. 
15 Aug Liberation Day.
Sep/Oct* Harvest Moon (Chuseok).
3 Oct National Foundation Day.
25 Dec Christmas Day.

*Date to be confirmed.