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

2009 
7 Jan Ashoura.
18 Mar Anniversary of the Death of President Said Mohamed Cheikh. 
9 Mar Birth of the Prophet.
1 May Labour Day.
25 May Anniversary of the Organisation of African Unity.
29 May Anniversary of the Death of President Ali Soilih.
6 Jul Independence Day. 
21 Sep Eid al-Fitr (End of Ramadan).
26 Nov Anniversary of the Death of President Ahmed Abdallah. 
28 Nov Eid al-Adha (Feast of the Sacrifice).
18 Dec Muharram (Islamic New Year).
25 Dec Christmas Day.

2010
19 Jan Ashoura.
18 Mar Anniversary of the Death of President Said Mohamed Cheikh. 
26 Feb Birth of the Prophet.
1 May Labour Day.
25 May Anniversary of the Organisation of African Unity.
29 May Anniversary of the Death of President Ali Soilih.
6 Jul Independence Day. 
11 Sep Eid al-Fitr (End of Ramadan).
17 Nov Eid al-Adha (Feast of the Sacrifice).
26 Nov Anniversary of the Death of President Ahmed Abdallah. 
7 Dec Muharram (Islamic New Year).
25 Dec Christmas Day.

Muslim festivals are timed according to local sightings of various phases of the moon and the dates given above are approximations. During the lunar month of Ramadan that precedes Eid al-Fitr, Muslims fast during the day and feast at night and normal business patterns may be interrupted. Many restaurants are closed during the day and there may be restrictions on smoking and drinking. Some disruption may continue into Eid al-Fitr itself. Eid al-Fitr and Eid al-Adha may last anything from two to 10 days, depending on the region.