Absolute Coronavirus Decimal Calendar

The **Coronavirus Calendar,** officially the **Absolute Coronavirus Decimal Calendar**, is a system of time measurement developed by many other people at the same time (for satirical or humoristical reasons). It is used sometimes in this wiki to indicate dates after 2020 AD.

## Development

In the year 2020 AD, the disease of the Sars-Cov-2 changed the lives of many people around the world, sometimes permanently. This lead to a world-wide change that changed humanity forever. Around those years, many technological achievements, such as the development of new powerful AI, marked that period. Therefore the pandemic marked a new era, and many people speculated that it would have a hypothetical calendar. The idea of having two eras relative to the start of the pandemic, namely "Before Covid" and "After Covid", was common at the time of the pandemic, however, no concrete calendar was invented having the "Corona epoch" as a basis.

## Inspirations

The Absolute Coronavirus Decimal Calendar was created by TheDankBoi69 from two main inspirations: *Star Trek*'s "stardate" and Swatch Internet Time.

### Stardate inspiration

According to the Wikipedia article for Stardate, it is a fictional time unit used in the Star Trek franchise. The key similarity is the notation, as it is comprised of a string of no less of four digits and often a decimal digit preceded by a decimal point. However, while the Coronavirus Decimal Calendar is consistent and easily convertible with dates starting from 2020, Star Trek's stardate is inconsistent, used for the main purpose of "avoiding to specifywhen does *Star Trek* takes place."

### Swatch Internet Time inspiration

This excerpt is taken straight from the Wikipedia article of "Stardate":

> According to *The Star Trek Guide*, "1313.5 is twelve o'clock noon of one day and 1314.5 would be noon of the next day. Each percentage point (sic) is roughly equivalent to one-tenth of one day." Likewise, page 32 of the 1988 *Star Trek: The Next Generation Writer's/Director's Guide* for season two states that the digit following the decimal point counts **one-tenth of a day**.
>
>

The decimal digit notation is also inspired from Star Trek's stardate, but mainly based in Swatch Internet Time, which is itself based in the French Revolutionary Calendar. The decimal digits are the same of the Swatch Internet Time.

## Description

The Coronavirus Decimal Calendar has 31st of December 2019 as a reference date between "Before Covid" and "Die Coronaviro (Coronavirus Day)", believed to be the "start of the pandemic", however, according to the WHO, it started in 30th of January 2020 (0030.X). Instead of dividing time in years, months, weeks, hours, minutes or seconds, the Coronavirus Decimal Calendar has as a basic unit the "Swatch Beat", which is one thousandth time of a day, or 86.4 seconds. Since this system is decimal, it allows SI prefixes to be added, so a centibeat is the 100000th time of a day, while another name for a day would be a "kilobeat". This calendar counts the days since the reference date, so, as an example, 10th of January, 2024 AD is converted to "1471.X".

According mathematical calculations, we can determine that, the ratio between a "centibeat" and a Gregorian sexagesimal second is 108/128, while the ratio between a sexagesimal minute and a "beat" is 36/25, as shown in this chart:

## Alternate names

The Absolute Coronavirus Decimal Calendar can also be called by other names, mostly for the sake of abbreviation. These names include:

* 'Rona Date
* Corona Date
* Coronavirus Calendar
* Anno Coronaviri
* Die Coronaviro
* Corona Era
* Coronavirus Pandemic Calendar.
* Pandemic Calendar

## Original draft

This draft from a .txt file explains some principles of decimal time, as well as proposing the SI to replace the sexagesimal second to the decimal system.

```
***The beat takes its name from Swatch Internet Time, famous for proposing to abolish time zones and dividing the day in 1000 equal parts.***
108/125 = seconds/cCsb; 432/5 = seconds/Csb
1,063,962,010,417 Hz is the integer caesiumbeat
1,063,962,010,416.66666666 Hz is the non-integer caesiumbeat
(1,063,962,010,416.66666666 is 9192631770 * 432/5)
(CAESIUM) BEAT ((Cs)b)= The duration of 1,063,962,010,417 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom.
9192631770 Hz *108/125 = 7942433849.28 1/centi-caesiumbeats (cCsb)
A meter is now the distance traveled by light in a vacuum in 125/32377585464 cCsb (125/32377585464 centi-caesiumbeats = 1/299792458 * 125/108)
**108/125 = seconds/cCsb; 432/5 = seconds/Csb**
~~PROPOSAL TO GET RID OF SEXAGESIMAL SECONDS IF THE UNITS HAVE TO BE TRULY METRIC.~~

**kilobeat another name for a day**
hectobeat	1/10 of a day
decabeat	1/100 of a day
**beat 1/1000 of a day**
decibeat 	1/10000 of a day
**centibeat 1/100000 of a day**
millibeat	1/1000000 of a day
microbeat	10^-6 of a day (thousandth of a millibeat)
nanobeat 	10^-9 of a day (thousandth of a microbeat)

a megabeat equals 1000 days (2.737851 years)
a gigabeat equals a million days (2,737.851 years)

All derived units that involve the second will be replaced with centibeats.

*m/s \* 108/125 = meters per centibeat (speed, velocity)*
kg/m/s * 108/125 = centipascalbeat (dynamic viscosity)
1/s/s * 108*108/125/125 = radian per centibeat squared (although gradians can be used too)

```