About TibetanDate

Welcome to TibetanDate — an authoritative, mobile-first web utility providing precise Gregorian ⇄ Tibetan (Phugpa lunisolar) date conversions and educational resources.

Methodology & Sourcing

Our core calculation engine is a deterministic client-side implementation of the traditional Phugpa calendrical mathematics established in the Kalacakra Tantra tradition. References include:

  • Svante Janson's Tibetan Calendar Mathematics
  • Edward Henning's Phugpa and Tsurphu calendar studies
  • Philippe Cornu's Tibetan Astrology (Shambhala, 1997)
  • The Tibetan & Himalayan Library (UVA) reference archives

AI Disclosure & Transparency

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AI Disclosure: AI helps explain calendar results. All date calculations use the deterministic Phugpa calendar algorithm — AI never calculates calendar dates directly.