Observed on Ashadha Shukla 15th.
The tithi window is the period during which this festival's defining lunar phase is active. Times are in Lan Sak local clock.
Guru Purnima is one of the festivals observed in the Hindu calendar. A detailed account of its mythology, significance, and rituals is being prepared.
Computed for Lan Sak (Asia/Bangkok) using local sunrise, sunset and astronomical positions.
Other observances and vrats falling in July 2026, with dates computed for Lan Sak.
A more detailed account of Guru Purnima — its mythology, regional variations, and rituals — is being prepared.