Charity

1. Giving charity on a Monday when the moon is full, one obtains a hundred thousand times the results of ordinary charity. 
2. One who gives charity on the day of the sankranti (equinox) attains four hundred thousand times the ordinary result. 

Yet simply by fasting on Ekadasi one obtains all these pious results, as well as whatever pious results one gets at Kurukshetra during an eclipse of the sun or moon.

Source

http://fa8t.blogspot.com/2012/11/utpanna-ekadasi-temple-festival.html