Use this calendar converter to compare a Gregorian date with a traditional Chinese lunar date, Tibetan calendar (Phugpa) date, Thai Buddhist Era year, or civil Hijri date. It handles intercalary months and repeated or omitted Tibetan days, runs locally, and is designed for reference and documentation checks.
Chinese lunar conversion uses the traditional lunisolar calendar and distinguishes a leap month from the normal month with the same number. Tibetan conversion uses the Phugpa tradition and distinguishes intercalary months, omitted days, and both occurrences of repeated days. Buddhist Era conversion is fixed year arithmetic. Hijri conversion uses the civil/tabular Islamic calendar, so official dates can differ where authorities use moon-sighting announcements.