Documenting the method of calculating the uposatha moondays as practised by the Mahānikāya in Thailand.
The method is based on a set of formulas called suriyayatra (สุริยยาตร์), originating from India and including additional rules observed in Southeast Asia.
Download the PDF or a ZIP archive with the PDFs referenced in the document.
Sections:
- Mahānikāya Uposatha Calendar Tutorial
- The Mahānikāya Uposatha Calendar Method
- The Thai luni-solar calendar
- Suriyayatra formulas
- The Duang Chata
- In Golang
Related:
- Forest Sangha Calendar
- suriya-go Golang package
- Splendid Moons online uposatha calendar
- Uposatha .ical link for Google Calendar (top-right corner, calendar icon)