The Gregorian Calendar is accepted as the civil calendar worldwide. In the Middle East, it is only one of several calendars used. Different holidays are calculated using different calendars and the date on the civil calendar may vary from year to year. This is particularly true for religious holidays. With the exception of Israel's Independence Day which usually celebrated based on the Jewish calendar, all national holidays in the Middle East are determined via the Gregorian Calendar and fall on the same date from year to year.

The following holidays occur in the first half of the year:

January
1	Independence Day (Sudan - 1 January 1956)
February
11	Revolution Day (Iran - 11 February 1979)
25	National Day (Kuwait - 25 February 1950)
March
20	Independence Day (Tunisia - 20 March 1956)
21	Noruz (New Year's Day) (Iran)
23	Republic Day (Pakistan - 23 March 1956)
April
1	Republic Day (Iran - 1 April 1979)
17	Independence Day (Syria - 17 April 1946)
May
14	Independence Day (Israel - 14 May 1948)	Usually celebrated on the corresponding date on the Jewish calendar
22	Unification Day (Yemen - 22 May 1990)
25	Independence Day (Jordan - 25 May 1946)
26	Independence Day (Georgia - 26 May 1918)	date of independence from Soviet Russia
28	Founding of the Democratic Republic of Azerbaijan (Azerbaijan - 28 May 1918)
June
26	Foundation of the Somali Republic (Somaliland - 26 June 1960)
27	Independence Day (Djibouti - 27 June 1977)

National Holidays in the Middle East - July to December