The Solar Hijara calendar is one of the world’s most accurate calendar systems. It is also known as Persian Calendar, Iranian Calendar, and SH. Calendar. A year in the Solar Hijara calendar is divided into 12 months of varying lengths. The first 6 months have 31 days, and months 7 through 11 have 30 days. The last month, Isfand, has 29 days in a common year and 30 days in a leap year. Months in the Persian Calendar. The earliest forms of Iranian time reckoning date back as far as the second millennium BCE. A number of different calendar systems were used in Persia through the centuries, including the Zoroastrian calendar and the Islamic calendar. The first version of the modern Solar Hijri calendar, the Jalali calendar, was developed in the 11th century by a group of astronomers including the Persian scientist Omar Khayyam.
*In Zoroastrian month each day has a special name, it almost include one of the month name such as Mehr, Bahman and so on. When the name of the day and month are matched Zoroastrian name them as Mehregan and… and take a party as celebrating those days.
*In Ramazan month most of the people are fasting and all the restaurant and coffee shops are closed until sunset.
*Christian, Jewish, and Zoroastrian have their own holidays.
*December 25 (Christmas) is not a national holiday in Iran.