What is the Thai Lunar Calendar?

Thailand uses the Gregorian calendar for modern civil structure while lunar dates remain important for Buddhist observance and traditional festivals.

How the calendar is structured

Waxing/waning lunar days and months used for religious observances.

Where and why it is used

Region: Thailand. Primary context: Buddhist holy days and traditional festivals.

History and development

The system belongs to the Traditional to Modern layer of the archive. Its origin is summarized as Traditional. CalculatorWiser separates historical reconstruction, religious observance, civil use, and modern technical standards so different systems are not treated as though they all work the same way.

Visual reference gallery

Conversion and accuracy notes

Some calendar systems can be converted deterministically with modern algorithms. Others depend on observation, local authority, historical reconstruction, or regional practice. CalculatorWiser marks those distinctions rather than presenting uncertain dates as exact.

Research trail

This entry is part of the research-backed World Calendar Archive. Primary research anchor for this entry: Thailand government / National Library references.