Tyerin is an alternate calendar. It is a geosolar calendar, which means it depends on the earth rotation and it's revolution around the sun.

Tyerian Calander
It starts to midnight of December 21st, the first day of Northern winter.
Contents
Time system[]
Tyerian Unit | Tyerain Conversion | Gregorian Conversion | Significance |
---|---|---|---|
Jubilee | 50 Years | 49.8984478101 Years | Based off of the Hebrew "Year of Jubilee" |
Year | 4 (5) Seasons | 364.258669014 Days | 1 Revolution of the Earth |
Season | 3 Months | 90.66919917 Days | |
Month | 6 Weeks | 30.223066391 Days | |
Week | 5 Days | 4.9863425925 Days | |
Day | 10 Myriaseconds | 0.9972685185 Days | 1 Rotation of the Earth |
Myriasecond | 10 Kiloseconds | 2.39344444442 Hours | |
Kilosecond | 10 Hectoseconds | 14.3606666665 Minutes | |
Hectosecond | 100 Seconds | 1.43606666665 Minutes | |
Second | 1000 Miliseconds | 14.3606666665 MIliseconds | Uses metric prefixes |
Milisecond | 10 Myroseconds | 14.3606666665 Microseconds | |
Myrosecond | 100 Microseconds | 1.43606666665 Microseconds |
Leap year[]
Year | Mid-Year Days | Last Days | First Days |
---|---|---|---|
4 | 5 | 0 | 0 |
32 | 5 | 1 | 0 |
620 | 5 | 1 | 1 |
6520 | 5 | 2 | 1 |
Dating System[]
The dating system of the Tyerian Calendar is Day/Month/Year/Jubilee. Despite not being a month, The Mid-Year Week, also called Mercidoni, is the "7th month" in the dating system.
Conversion Equation[]
Note: In the following equations "d" stands for the day of the year
To convert from the Tyerian Calendar to the Gregorian Calendar, use this equation:
To convert from the Gregorian Calendar to the Tyerian Calendar, use this equation:
Epoch[]
The epoch of the Tyerian Calendar is the equivalent of the gregorian year: 1300 AD. Anytime before 1300, instead of listing a particular jubilee just has "BJ".
Division of a Year[]
Name | Division | Days |
---|---|---|
Winter | 3 Months | 90 |
Spring | 3 Months | 90 |
Mid-Year Week [nb 1] | 1 Week | 4 (5) |
Summer [nb 1] | 3 Months | 94 (95) |
Autumn | 3 Months | 90 |
Name | Number | Season | Gregorian Equivalent | Gregorian Equivalent in a Standard Leap Year |
---|---|---|---|---|
Decari | 1 | Winter | December 21–January 20 | December 21–January 20 |
Ianari | 2 | Winter | January 21–February 19 | January 21–February 19 |
Febrari | 3 | Winter | February 20–March 21 | February 20–March 20 |
Martari | 4 | Spring | March 22–April 20 | March 21–April 19 |
Aprilari | 5 | Spring | April 21–May 20 | April 20–May 19 |
Mai'ari | 6 | Spring | May 21–June 19 | May 20–June 18 |
Mid-Year (Mercidoni) |
7 | Summer | June 20–June 22 | June 19–June 22 |
Iunari | 8 | Summer | June 23–July 22 | June 23–July 22 |
Iulari | 9 | Summer | July 23–August 21 | July 23–August 21 |
Augustari | 10 | Summer | August 22–September 20 | August 22–September 20 |
Septari | 11 | Autumn | September 21–October 20 | September 21–October 20 |
Octari | 12 | Autumn | October 21–November 19 | October 21–November 19 |
Novari | 13 | Autumn | November 20–December 20 | November 20–December 20 |
Name | Number | Type |
---|---|---|
Monday | 1 | Weekday |
Tuesday | 2 | Weekday |
Wednesday | 3 | Weekday |
Thursday | 4 | Weekday |
Friday | 5 | Weekend |
Holidays[]
Holiday | Date |
---|---|
Tyerian New Years | Decari 1 |
Christmas | Decari 4 |
Kwanza | Decari 5–Decari 11 |
New Years Eve | Decari 10 |
New Years | Decari 11 |
Epiphany | Decari 16 |
MLK Jr. Day | Decari 29 |
Ground Hog Day | Ianari 13 |
Valentine’s Day | Ianari 25 |
Jubilee | Febrari 3 |
Good Day | Febrari 13 |
St. Patrick’s Day | Febrari 14 |
Easter | Febrari 15 |
Cinco de Mayo | Martari 25 |
Pentacost | Aprilari 4 |
Father’s Day | Mai'ari 1 |
Columbus Day | Septari 21 |
Halloween | Octari 10 |
All Saints’ Day | Octari 11 |
Thanksgiving | Novari 6 |
Chanukah | Novari 17–Novari 24 |
Tyerian New Year's Eve | Novari 30 |