Regardless of the nature of their interest in calendars and dates, every user will surely have a reason to regard Calendar Magic as a curious, interesting, or even an indispensable tool. With 26 historic and current calendars to choose from, compare, and convert between, this feature-rich free tool will solve all your doubts about dates, years, festivals, etc. The program includes a wide range of extra utilities, including an event reminder and a “quick notes” tool.
Be it from a scientific point of view or simply out of curiosity, Calendar Magic has something for everyone. From finding out on what day of the week you were born to the equivalent of a specific date on the Aztec or Mayan calendars, this excellent and really interesting tool can provide you with the right answer in just a few clicks. The list of features, functions, and utilities is truly exhaustive, and it ranges from accurate calendar comparisons and conversions to curiosities like knowing how long it’d take to collect all 14 possible Gregorian calendars. It also goes from lists of past and future dates for the most popular festivals in the most widespread religions to a “This is your life” section to know more about the day of the week you were born, your “Chinese age” or the day of the week of your next birthday. The possibilities are endless, and so are the tools and utilities Calendar Magic provides.
On a more practical note, you will also find a “World clocks” section to find out the current time in any other time zone, a countdown timer, a utility to take and save notes, a reminder section for all your important events, a unit converter, a tool to find the distance between any two of up to 18000 locations across the world, and many, many more. On a more scientific note, you will also find a wide selection of mathematical tools, such as a fraction calculator, a statistics calculator, an equation solver, a prime calculator, a number base converter, an Egyptian fraction calculator, a currency converter, and even a method for solving the Travelling Salesman problem.
As said, Calendar Magic has something for everyone. This absolutely free tool is one of those rara avis software programs that perfectly combines the best of two worlds – the world of science and calendar studies from the most accurate and rigorous point of view and the world of anecdote and intriguing curiosities. Either way, this is certainly a tool that is always nice to have at hand.
v18.0 [Dec 9, 2011]
Calendar Collector
Implemented a new routine (Calendars > Calendar Collector) for answering the question "Starting in
any specified year, for how many years do I need to collect calendars to have a copy of all fourteen
possible Gregorian year calendars?"
You may find the results surprising, especially when the collection period spans a century year, such
as 1900 or 2100, which is not a leap year. For example a collection started in 1873 would not have
been complete until 1912 – a period of 40 years.
French Revolutionary Time
At the suggestion of a user, implemented a routine (Time > Revolutionary Time) for converting
between normal and French Revolutionary time. The latter divides each day into 10 decimal hours,
each decimal hour consisting of 100 decimal minutes and each decimal minute consisting of 100
decimal seconds.
Interval Arithmetic Calculator
Implemented a simple Interval Arithmetic Calculator (Maths Utilities > Interval Arithmetic Calculator)
for performing arithmetic on approximate values which lie within specified ranges (intervals). For
example, a measured length of 1.8 metres, correct to 1 decimal place, could lie anywhere in the
interval 1.75 to 1.85 metres inclusive. Such an interval is written [1.75,1.85].
Interval arithmetic can be useful when working with approximate data and can provide an indication of
how many digits to trust in computed results.
For a worked example, see the section "Interval Arithmetic Calculator" later in this document.
Visual Indicators for Imminent Reminders
A user pointed out that, when Calendar Magic's main screen (form) is minimised, there is no longer
any visual indicator for imminent reminders. This has been rectified by changing the Calendar Magic
task bar icon to a red or orange diamond shape whenever the main screen is minimised, provided that
the visual indicator on the main screen has not already been hidden.
Russian Time Zones and Use of DST
Russian cities and towns are now on "permanent DST", i.e. clocks are no longer turned back one hour
in late October. A few regions have also changed time zones. My thanks to Andrey Pivovarov for this
information.
World-wide Locations Database
Improved the coverage of Russian cities and towns by adding 160 additional Russian locations. Also
added the Alaskan locations Barrow, Bethel, Kodiak and Kotzebue at the request of a user.
The database now contains over 18500 locations.
Observed Days
Based on input from a Serbian user, the observed day information for Serbia has been significantly
revised. My thanks to Aleksandar Kolović.
Updated information for Software Freedom Day (third Saturday in September since 2006).
Added World Porridge Day (Oct. 10 from 2010 onwards) under the category "various". See, for
example:
http://www.goldenspurtle.com/world-porridge-day/
Javanese Pawukon/Pasaran Calendar
Following additional information from Kaboel Karso in Yogyakarta, adjusted the code for calculating
Windu values.
