Why Calendar Reform?

Do you know why dates annually fall on the different day of the week?

Do you know why the complete cycle of the current calendar is 400 years long?

Do you know why the calendar we use daily is the most expensive system?

Why are there indeed in total 14 different calendars in use?

It must be changed annually

Because the total days in a year are not divisible by the 7-day week, there are one or two remaining days. That causes the calendar must be changed annually. However, all studies and proposals suggest abolishing the annual calendar renewal and adopting the simple design of a perennial calendar. 

It is over-complicated

It is over-complicated becuase the complete cycle of the current calendar is neither 4 nor 28 years, but is 400 years or exact 20,871 weeks. The complete cycle having exact weeks was arithmetically satisfied, but a perennial calendar with repeating single year cycle is practically perfect enough for us. 

It confuses our memory

We are often difficult to recall the memory of the same date of the past year, because dates always fall on the difference day of the week. Actually, the annual alteration of the calendar makes our memory confused. It could also be the reason why we often miss some important birthdays or anniversaries.

It wastes our effort & resource

While we produce new calendars and  diaries every year, we throw away tons of expired or over-produced calendars and related stationery. The calendar is an imperfect system that keeps wasting our time, effort and resource to maintain it updated annually. In fact, our gregorian calendar is in total 14 different calendars in use. A repeating single-year calendar should be rational and good for us.

It alters the dates of annual events

Because of the annual renewal of the calendar, annual events, conferences, and exhibitions must be realigned every year. School schedules and many work plans need to be updated yearly. It is obviously wasting our massive time, effort, and resource. Because of the annual alteration of the gregorian calendar, there are people to plan certain activities for their organization again and again.

It weakens date-related statistics

For countries and businesses, the financial budgets are highly depend on periodic statistics, such as last month or last quarter. The altering weekdays per month and per quarter weakens the precision and relevancy of those statistics, affects the projected results, and cause expensive budgets. We often have to spend extra efforts to study and adjust the variations, since every year is different.

About the Gregorian Calendar

Brief History

The current calendar is called as "Gregorian Calendar". In 1582, Pope Gregorian XII reformed it from the Julian calendar. From 1752, Britain and its North American colonies adopted it . The reason of that calendar reform was to stop the drift of the calendar with respect to the equinoxes and solstices. The reform actually helped to arrange the date for Easter. However, the Easter Day is still undergoing the reform discussion. 

Not Astronomy

Did you know how days are arranged into the twelve months? Do you know why dates must fall on the different day of the week every year? My young son has asked, but most people cannot give the right answer. Surprisingly, those calendar features are not related to any astronomical purpose, but the decision of some ancient leaders. Although the gregorian calendar is not most accurate solar calendar, the year cycle is correctly between 365 and 366 days.

Many Proposals

In the history, there happened many calendar reforms. In every century, there were several proposals of calendar reform. All proposals and studies suggest abolishing the annual renewal and adopting a perennial calendar. We successfully adopted the Metric system and gained vast benefits from the simplicity. A repeating single-year (perennial) calendar should be practically enough and suitable for all strata of society.   

The proposed WEcalendar is the simplest perennial calendar

The proposed WEcalendar (The World Enduring Calendar System) is a perennial calendar. Comparing with all other proposals, it proposes the least changes. It has rigorously considered the contemporary calendar usages among all strata of society. It also balanced among the calendar's history, culture, tradition, and religious belief.  It is very simple and suitable for the strata of society. It will be the most practical civil calendar for governments and businesses. 

Other concerns:

Religious Compliance (pdf)


Leap Years (pdf)


Weekly Interest Rates (pdf)


Other Proposals (pdf)



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