A lunisolar calendar with months beginning every new moon, alternating between 29 and 30 days.

Emerged during the Shang Dynasty, with the current standard relating to the Qin Dynasty.

Traditionally used by Chinese communities and cultures across East Asia, it is still used for cultural and religious purposes.

Chinese New Year, Mid-Autumn Festival, Dragon Boat Festival, Qingming Festival.

Based on lunar months of 29 days alternating with 30 days.

Created during ancient times, evolving from earlier Babylonian and Canaanite calendar systems.

Used by Jewish communities worldwide.

Rosh Hashanah, Yom Kippur, Passover, Sukkot, Hanukkah.

It is made up of 365 days and is divided into 12 months, with an extra day every 4 years.

It was introduced by Pope Gregory XIII.

Predominantly used by Catholic countries in Europe, and has since become the standard calendar for most of the world.

New Year's Day, Valentines Day, Easter, Christmas.

It combines multiple interlocking calendars, most famous including the Tzolk'in (260-day) and the Haab (365).

It has ancient roots, dating back to pre-Columbian Mesoamerica.

Used in ancient Mayan civilization.

Didn't have holidays, instead it was used for tracking ceremonial and agricultural events.

Based on lunar months, with 12 made up of 29 or 30 days, resulting in 354 or 355 days.

Was established during the time of the Islamic prophet Muhammad in the 7th century CE.

Primarily used by Muslims worldwide.

Ramadan, Eid al-Fitr, Eid al-Adha, Islamic New Year, Mawild al-Nabi.