Review of Calendar Reforms6 min read

Calendar-Reform Globalization Politics
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edit: I have added in the World Season Calendar


Here I am going to write what I think is required for a successful world-wide secular calendar and for calendar reform. I will also list my reviews of the various calendar reform attempts too. I also have a spread sheet with point based ratings of the various Calendar Reform attempts, which also includes a comparison to our current world-wide secular calendar which is the Gregorian Calendar (Wikipedia). I have also posted a bunch of information, history, and issues with the Gregorian Calendar in my 45-page blog page on the Calendar Reform, so if you want to get the skinny on our calendar then please read through that post. It is a page turner, let me tell ya.

ALERT!!! I have a definite bias!

Keep in mind, that I am very, very biased in thinking and talking about calendar reform due to my previous significant history (over 10 years of support of the International Fixed Calendar[ IFC] ) and my significant recent writing on the IFC, so, all of my judgments and critiques will be heavily biased because of that and, in many ways, my calendar reform writings will, in the end, be a comparison of the advantages and disadvantages of the specific reform attempt to the advantages of IFC. In other words, take my biased thoughts on this topic with that grain of salt for that is how all of my Calendar Reform thoughts are framed. =)

Note: I will NOT go into a great deal of detail in the individual posts with the issues, because I cover them quite well in my page on Calendar Reform (link posted above). If you want to know more about those issues beyond what I cover here you will want to check out that page.

Traits of a Successful Calendar Reform for the World

Ultimately, the traits for a successful calendar reform that will actually help the world and will significantly ease the lives of individuals and for businesses too. Making lives easier for the general populace is more important than making it easier for business, although if you make it easier for one, then you will make it easier for the other too.

There are a lot of different traits that the calendars of the world have:

  • type: solar, lunar, lunisolar
  • type: annual, perpetual
  • number of days per calendar year
  • number of days per month
  • number of weeks per month
  • number of days per quarter
  • leap method

Of those, below I list the most important traits needed to create a calendar that creates the best and most efficient environment of use for all of humanity, but keep in mind that the calendar that I am talking about is the calendar meant to be used as the primary calendar source for all of humanity with other ethnic, cultural, and religious calendars to be used concurrently.

If you really want to understand the justification for these traits then please read my above post on Calendar Reform where I tear apart the Gregorian Calendar and all of its many flaws, explain and give examples as to why they are problematic, and then make the case for why the IFC is our salvation by fixing all of those issues.

SolarThe calendar must track as close as possible to the solar year which is how our lives are really governed due to the seasons and biological processes.
PerpetualA perpetual or perennial calendar is the same from year to year so you only need one calendar which also makes year to year planning and comparisons easy and allows us to fix dates which is important for ease of use and planning.
Equal Monthsequal months (4 weeks of 28 days) has the following powerful benefits:


  • month to month planning and scheduling is intuitive
  • month to month comparisons are very, very easy
  • makes it easier to create a perpetual calendar because months have NO partial weeks to offset the days of the week that the months fall on
Leap DayLeap Days are needed to be used instead of Leap Weeks due to reduced offset, and solar drift, and ease in comparison and planning. I posted about why Leap Days are better here in my post: Calendar Reform: The Inferiority of Leap Weeks to Leap Days

If a calendar has the above traits then we are probably pretty close to a decent solution, although currently there are very few calendars (2) that meet these requirements:

Reviews and Comparisons

If a calendar is not solar then I will not even look at it for this consideration. Most serious reform attempts are all typically based off our Gregorian Calendar which is a solar calendar.

If you are at all familiar with Calendar Reform and the various calendar proposals out there then you already know the bloodbath that is going to happen here based on the required traits I set forth above . =)

 solarperpetualequal monthsleap day
Gregorianx  x
World Season Calendarxx x
World Calendarxx x
Henry-Henke Permanent Calendarxx  
Pax Calendarxxx 
International Fixed Calendarxxxx
Reformed Pax Calendarxxx 
Reformed International Fixed Calendarxxxx

The only 2 winners are that meet all of the requirements:

  • International Fixed Calendar
  • Reformed International Fixed Calendar

Here is a link to my: Calendar Reform Comparison Spreadsheet (Google Sheets)  so you can see a number breakdown. With this spreadsheet you will see my bias showing too.

Here are links to information about the various above mentioned calendars:

12 Month Calendars

13 Month Calendars

No Month Calendars

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