The Gregorian calendar is the international standard calendar used worldwide. Most of the world follows the Gregorian calendar for business, government, and international communication. It has 12 months and 365 days in a common year, with leap years every four years.
The Hebrew calendar is lunisolar and used for Jewish holidays. The Hebrew calendar determines the dates of major Jewish festivals such as Passover, Rosh Hashanah, and Yom Kippur. It combines lunar months with solar years, occasionally adding a leap month to stay aligned with the seasons.
The Islamic calendar is a lunar calendar used for Islamic rituals and holidays. The Islamic calendar is used by Muslims worldwide to determine dates for religious observances, including Ramadan, Eid al-Fitr, and the Hajj pilgrimage. Since it is shorter than the solar year, Islamic dates move earlier each Gregorian year.
Today's Hebrew date is 3rd of Tishrei, 5786.
Today's Hebrew date is Rabīʿ ath-Thānī 3, 1447.
Different calendars evolved in different cultures and religions, often based on solar, lunar, or lunisolar cycles. Today, the Gregorian calendar is the global civil standard, while the Hebrew and Islamic calendars remain central to religious observance