DayNumCalc app for iPhone and iPad

DayNumCalc gives easy access to basic date calculations:
- The current date/day number information is immediately available. Examples: day 1 = 1 January; day 365 = 31 December (non-leap year) or 30 December (leap year)
- Date/day number calculations: get the day number from a chosen date, and a date from a paired year/day number
- Calculate the number of days between two dates
- Determine a date after adding or subtracting a number of days fro a chosen date
- Check the day of the week for a date of your choice
Widgets for the Home Screen, the Today View, and the Lock Screen are available for ease of use.