Adiyen is using the calendar facility from koyil.org since last year and is very useful.
We can add these calenders(esp Thondai Nadu and azhwar aacharyam thirunakshatram) from http://koyil.org/index.php/calendar to our google calendar account/app and sync them.
After adding if we use the google calendar widget on main screen of our mobile we can get the schedule of events for a week.
We can also set notifications to know the events a day before