1)   Time Calculator Deluxe Edition 1.5
Add, subtract, divide and multiply time values in days, hours, minutes and seconds. Convert to and from fractional units. Find the day of any date in the Gregorian calendar within a range of up to 15 centuries and perform military time conversion.

 2)   Chinese Calendrics 7.01
A program to convert between dates in various Chinese calendars and dates in the Gregorian and Julian calendars, and to find lunar new year's day and leap months for any year in the Chinese Calendar.

 3)   Millennia Calendar 2.0.0
Local time for any locations on Earth; calendars, holidays and memorial days of many countries and religions; coordinates and time of rise, transit and set of the Sun, the Moon, and Planets; equinoxes and solstices; solar and lunar eclipses.

 4)   Time Calculator Pro v2 2.20
Add, minus, divide and multiply time values in hours, minutes and seconds. Convert from fractional values and vice-versa. Use the DAE (date analysis engine) to find the day of any date in the Gregorian calendar within a range of up to 15 centuries.

 5)   Easy Date Converter 7.66
Does date arithmetic (adds a number of days to a date and calculates the number of days between two dates) and converts among Gregorian dates, Julian dates, Annus Novus dates, Julian day numbers and day-in-year dates of the form yyyyddd.