Yalda Night is held on December 21. شب يلدا Shab-e Yalda, Shab-e Chelle - Persian festival held on the longest and darkest night of the year. Celebrated in Iran, Afghanistan and Tajikistan. This event in the third decade of the month december is annual.
Engineer's Day in Iran on February 23 (This day is celebrated to respect Nasir al-Din al-Tusi, Iranian scientist);
Father's Day in some Islamic countries on February 25 (Iran, Kuwait, Bahrain, Iraq, Oman, Qatar, Egypt, Yemen, Syria, Lebanon, Somalia, Sudan, Mauritania is celebrated on the 13th day of the month of Rajab);
Mother's Day in Afghanistan on March 8 (also Albania, Azerbaijan, Bosnia and Herzegovina, Bulgaria, Burundi, Burkina Faso, Kosovo, Laos, Macedonia, Moldova, Montenegro, Serbia, Tajikistan, Uzbekistan)