Local sustainability

The Fixed Calendar – improved

Another improvement to The Fixed Calendar conversion table showing end dates of Gregorian months.

The Fixed Calendar update June 2021 showing when months end in the Gregorian calendar

In the Fixed Calendar, all months end on Saturday the 28th. What dates do they correspond to in the Gregorian calendar? The last column shows that, for example April ends on April 22nd every year. The week days will be different every year in the Gregorian calendar, which is why it’s inconvenient. And that’s not the only problem with it.

The last column shows Fixed Calendar months end earlier every Gregorian month, because they are shorter and there are 13 of them. However, the dates are irregular because Gregorian months are irregular.

The conversion calendar shows how distorted the Gregorian calendar is in comparison to a fixed calendar. There are three more days in the second half of the Gregorian year than the first half. The Fixed Calendar solves this by putting July 1st into the first half (Sol 14th) and making December 31st an intercalary day (taking it out of the weekday system).


Consequently, the Gregorian calendar quarters are not equal, as shown in the table below.

QuarterGregorian CalendarFixed Calendar
1stJanuary to March= 90 daysJanuary to April 7th= 91 days
2ndApril to June= 91 daysApril 8th to Sol 14= 91 days
3rdJuly to September= 92 daysSol 15 to September 21= 91 days
4tfOctober to December= 92 daysSeptember 22 to December 28th= 91 days
Quarters compared: Gregorian vs Fixed

This has significant on going consequences for accounting in any business and government financing. Here are some real world examples. The Fixed Calendar quarters do not coincide with whole months, which is considered a disadvantage by some who prefer the World Calendar, which is fixed with 12 familiar though not regular months corresponding to the Gregorian months. However, quarters are an accounting unit and therefore I contend that the Fixed Calendar quarters are no impediment to the numerate.

These irregularities are the reasons we’re not able to memorize the Gregorian calendar.

I contend that it is easier to learn a new month, than memorize the irregular number of days in the months of the World Calendar.

Why a calendar we can memorize?

There are two considerations. One, our resilience as a society in the face of potential disruptions to the digital age from electro-magnetic bombs and solar flares is diminished. Two, the affect on our brains of out-sourcing everyday functions is in question. Studies show our memories can be impaired (Johansson, A). We can lose skills, too, such as using maps. Personally, I feel duller having to turn to a smart phone for calendar, spelling and directions assistance. It makes me feel dependent and weak. It is somewhat spiritually depleting to be unable to act without them, or rather, to not use the capacities I have. Anna Johansson puts it well in her article We need to reduce our dependence on technology if we want to keep innovating:

Instead of introducing a gradual improvement or iterative form of assistance, we’re overwriting entire functions of our brains and bodies. As a metaphor, shoes serve to protect your feet from the dangers of walking on questionable terrain, but if you rely on a wheelchair when you don’t truly need one, your leg muscles would eventually atrophy.


In a sense I am acting in defense of all humans when I call for changes to our human environment that enable us all to operate in it with unneccessary aids.

Since the Information Revolution, calendar (and spelling) reform movements have receded into the background. Smart phones among other devices, have taken over the memorizing for us. Few people born after the 1990s have lived without the aid of technology and therefore barely notice the inconvenience of the Gregorian calendar. Reform movements have evolved in response to changes in power structures, as modern technology has shifted innovation to a more distributed level. While once it was governments that debated calendar and spelling reform, now these changes are coming directly from the general public. However it seems these technologies are actually serving to stifle innovation of some international habits; calendars and spelling.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s


This entry was posted on June 18, 2021 by .
%d bloggers like this: