Looking into yearly holidays in different countries around the world, one can understand that both long holidays (holidays longer than eighteen days) and short holidays (holidays shorter than six days) form a very small proportion of holidays in the calendar of countries around the world. Most developed countries prefer to be moderate in such a way that the ten most powerful countries of the world, that is, the United States, Japan, China, Germany, France, Britain, Italy, Brazil, Spain, and Canada have respectively one ten, fifteen, seven, nine, twelve, eight, thirteen, ten, and eleven formal holidays in their calendar. Most countries of the world have 11 or 9 days for their yearly holidays, and this is the case with almost 26 percent of the world countries.
Iranian solar calendar in 2018 has 52 Fridays (which is the weekend and a holiday in Iran) and 25 other official holidays some of which are on weekends (that is Fridays) and some others are on weekdays. Farvardin (March-April) with 7 days, Khordad (May-June) with 4 days, and Aban (October-November) and Shahrivar (August-September) with 3 days (except for Friday) have the most holidays. Mehr (September-October) and Day (December-January) have no other holidays than Fridays. In order to see official holidays in Iran, just click here.