Calendar X

10.2.7 26 Jan 2006

Powerful rules-based calendar.


Developer website: WunderMoosen

Calendar Xª is a unique multi-discipline calendar with diary, astronomical tables and ISO Week calculator/Day calculator. This release provides Universal Binary format and introduces several new features as well as bug fixes.

Calendar X goes way beyond other calendars. Calendar X is the successor to WunderMoosen's popular Calendar2000. If you are looking for a simple light weight calendar that can just show you the days and months on the standard Gregorian Calendar...THIS IS NOT IT!!!

Calendar X is a heavy duty perpetual calendar that offers views across many Calendar disciplines. It computes astronomical events (moon phases, blue moons, solstice, equinox, moon rise and set, sun rise & set) and displays the information according to the selected calendar system. It supports Julian, Gregorian (in many reforms), Jewish, Islamic, Bahai, Indian Civil, Mayan, Coptic, Ethiopic, Persian, Fasli, Shenshai and Qadimi, and Viking. Additionally it will also give date information in Julian, Gregorian, Jewish, Islamic, Bahai, Indian Civil, Mayan, Coptic, Ethiopic, Persian, Fasli, Shenshai, Qadimi, Viking, French Revolution, Roman, ISO Week and Julian Day Number.

Calendar X is useful as a general Calendar but it is really a must have tool for educational use. It gives historians and other researchers a set of powerful tools to continue their research. Anyone who is interested in other cultures and how those cultures mark time will find Calendar X an important aid. Heck, it is just plain fun. The goal of Calendar X is to not only provide useful daily information but to educate about history and what calendars have meant to mankind and why. Learn why calendars exist and how they are indispensable to civilization. Calendars were not invented just to keep everything from happening on the same day.

What's New

Version 10.2.7:
  • Fixed probelm with Solar Details pre 1904.
  • Fixed a cosmetic problem with Persian dates in Info window when the date is before the begining of the Persian calendar era.
  • Applied a workaround for a Framework bug saving the main calendar window position on some systems.

As of 10.2.6:

  • Now a Universal Binary. Works on Intel and PPC Macs.
  • Fixed print in both MyCalendar and Main View.
  • Fixed Earth-Moon distance in Solar Details. The error was a labelling error - the distance reported was in earth radii units but was labelled: "km". We now convert the distance from radii to km. Also fixed typo for Right Ascension.
  • Appearance was defaulting to Brushed Metal for new users when it should have been Aqua.
  • Fixed leap year problem in Persian Calendar.
  • Fixed problem with some future dates on the Hebrew calendar.
  • Added Solar Details View to main calendar window.
  • Separated Sun Rise and Moon Rise charts and added WunderMoosen's unique graphical representation of Sun and Moon visibility.
  • Overhauled Diary and added new global search.
  • Desktop Calendar:
    • Now stays at the desktop level during Expose.
    • Made easier to grab and move You have to click in an opaque area and then drag while holding the mouse button down.
  • Fixed many minor issues.
  • Added preferences option to default to having the continuous spell checking active in the Diary. You can turn it off on the "Preferences->Diary->Options" panel.
  • In this release Calendar X defaults to the Aqua appearance. Although this is the default, you can change it back to the Brushed Metal appearance by checking "Preferences->Application Preferences->Options->Use Brushed Metal Appearance".
  • This is an interim release. There is a major upgrade of the product in the works.
  • Updated Software LIcense: Paying the license fee allows you the right to use one copy of the Software up to two computers for use by the same person such as a laptop and a workstation as long as both are not in use at the same time.


Mac OS X 10.3 or later Universal Binary

*Previously available here


Current Version (10.x)


Version Downloads
Business / Applications
26 Jan 2006
OS X / PPC 32 / Intel 32