Raksha Bandhan
Shravana Shukla Purnima
Aparahna (afternoon): 01:43 pm to 04:21 pm
A description of this observance hasn't been written yet.
How this date was worked out: Shravana Shukla Purnima prevailing in the afternoon (aparahna). Bhadra covers the afternoon, so it moves to the next morning while Purnima lasts. The tithi changes within half an hour of that moment here, so some almanacs may list the day before or after: check your local almanac.