Here is the process to add Vaisnava Calendar Events in Google Calendar & sync with Mobile calendar:
1) Read the process to subscribe to calendars in Google Calendar at:https://support.google.com/calendar/answer/37100?hl=en
2) Add one of the below calendar URL
New Delhi: https://www.google.com/calendar/ical/v3tkl4venmlhbk83lj7ed4791g%40group.calendar.google.com/public/basic.ics
3) Sync Google Calendar with mobile: http://www.google.com/mobile/sync/
(Android mobile can sync directly from phone calendar settings)
Other cities Vaisnava calender can be made from GCal at:http://www.krishnadays.com/
or you can contact me with City name & I will add the city & share the URL.