1)   TrayDay 7.03
TrayDay: today's date at a glance, in the Windows tray, with handy popup calendar. Can show week numbers to ISO (or your own) standard. A double-click types the date in the format of your choice. Julian Day and Internet Time features.
calendar, date, internet, time, swatch, julian, tray, counter, millennium, week number,

 2)   Easy Date Converter 9.22
Adds a number of days to a date, calculates the number of days between two dates, and converts among Gregorian dates, Julian dates, Julian day numbers and ordinal dates of the form yyyy-ddd. Supports batch computation.
date, easy, Converter, program, Conversion, Arithmetic, day, software, year, number,

 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.
millennia, calendar, past, julian, gregorian, indian, ancient, egyptian, coptic, ethiopian,

 4)   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.
chinese, calendar, date, year, astronomy, software, moon, calendrics, lunar, solar,