1540 butter lamp offerings were made on Guru Rinpoche day ( 10th day of the lunarĀ month) š
Often making positive aspirations is very beneficial.
The stupa is well known place where pilgrims make vast aspirations and is reputed as a very powerful place for doing so.
If anyone wishes to read about the Stupa and the legend of the Stupa (the legend starts around paragraph 3 in the reference below):
https://www.rigpawiki.org/index.php?title=Boudhanath
