Archives: World Calendars

The Republican calendar was created to break with ancien-régime conventions and used nature-themed month names. It was used officially for roughly a decade before being abandoned.

The Revised Julian calendar should not be confused with the older Julian calendar; its leap rule differs even though many current dates align with Gregorian dates.

The Gregorian reform reduced the long-term drift of the Julian calendar and is now the primary civil calendar used internationally, though many communities retain parallel religious or traditional calendars.

Nanakshahi calendars are published by Sikh institutions. Because community practice has evolved, specific edition/rules should be stated when precise observance dates are presented.

The Badíʿ calendar uses a distinctive 19×19 structure and intercalary days called Ayyám-i-Há. Baháʼí New Year, Naw-Rúz, is tied to the vernal equinox.

Minguo year 1 corresponds to 1912 CE. It is an era-numbering system over the Gregorian calendar structure.

Japan uses the Gregorian calendar alongside era names. The current Reiwa era began in 2019, making 2026 Reiwa 8.

Modern Korea uses Gregorian civil dating, while traditional lunisolar dates continue to matter for holidays and cultural observance.

The Javanese calendar is a hybrid tradition and is especially notable for combining lunar dating with indigenous cyclic week systems.

Bali uses more than one traditional time system; the Saka calendar and Pawukon serve different calendrical functions.