This is a simple application with three functions/modules. First module calculates the interval between two dates and returns number of days, weeks, business and weekend days. Second module adds or subtracts number of days to the provided date and returns the calculated date and day of the week. When touched to results in the two modules on the first screen, text is copied to clipboard. Third module is a day counter for annual events which calculates the number of days left until the event and sorts the events according to the number of days left. To reach the day counter screen swipe is required. To modify or delete a record double tap on the record label is required. Events within the last 30days are color coded, for the rest of the records color is blue. Application contains only banner ads at the bottom. Application works without internet.