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