The Chinese, Buddhist, Burmese, Assyrian, Hebrew, Jain and Kurdish as well as the traditional Nepali, Hindu, Japanese, Korean, Mongolian, Tibetan, and Vietnamese calendars (in the See more

The Gregorian calendar (the world's most commonly used) is a solar one but the Western Christian churches use a lunar-based algorithm to determine the date of Easter and … See more

Determining leap months
A tropical year is approximately 365.2422 days long and a synodic month is approximately 29.5306 days long, so a tropical year is approximately 365.2422 / 29.5306 ≈ 12.36826 months long. Because 0.36826 is between … See more

The following is a list of lunisolar calendars sorted by family.
• Babylonian calendar family – common use of the Metonic cycle
• Hindu calendar family – shared astronomical roots
• Chinese calendar family – years … See more

• List of calendars
• Callippic cycle
• Calendar reform
• Nasi' See more

• Dershowitz, Nachum; Reingold, Edward M. (2008). Calendrical Calculations. Cambridge: Cambridge University Press. ISBN 9780521885409. See more

• Introduction to Calendars Archived 2019-06-13 at the Wayback Machine, US Naval Observatory, Astronomical Applications Department.
• Luni-Solar Calendar See more