For hundreds of years, people tried to fit days and months evenly into a year or a period of several years. But no system worked perfectly.
In India time-calendars are luni-solar. To calculate time and event we have the Panchang. It's a kind of calendar which has five main components, that’s why it's called Panchang (panch is five and anga means part).
The project was to make a graphically simplified solution of the Panchang for those who want to use it but are unable to, because of its complex nature.