Eras

0.0 (before 2.4 billion BCE)

Pre-Pylistroph

1.0 (c. 2.4 billion BCE)

The Pylistroph

2.0 (c. 1.2 billion BCE)

Flight of the Daamin & Schism of the Hlutr. Nephestal founded.
2.1 (c. 600 million BCE)
Empire of the Iaranori
2.2 (c. 22 million BCE)
Virgo Wars
2.4 (c. 5.2 million BCE)
Avethellan Empire
2.6 (c. 1.63 million BCE)
Dorascan Empire
2.8 (c. 900,000 BCE)
Marpethtal Empire
2.9 (c. 800,000 BCE)
Empire of the Miethara

3.0 (c. 100,000 BCE)

Pre-Imperial Terra
3.75 Dance for the Ivory Madonna
3.962 "Gamester"
3.958 "Big Improvement"

4.0 (2153 CE/TE 0/12,153 HE)

5.0 (2624 CE/TE 471/12,624 HE)

Interregnum
5.38 A Rose From Old Terra

6.0 (2488 CE/12,488 HE)

New Continuum
6.55 "The Geas Ingenerate"

7.0 (10,274 CE/20,274 HE)

Second Terran Empire

8.0 (10,356 CE/24,356 HE)

Post-Imperial Humanity
8.5 The Leaves of October

9.0 (c. 3 million HE)

Endtime

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First Terran Empire Calendar

The Imperial year is 365 days long. It is divided into 12 months of 3 tendays each, plus five intercalary days.

Years are dated from the founding of the Empire, where AD 2153 = TE 0.

The Year

Year Day (intercalary)

January
February
March

Walpurgis (intercalary)

April
May
June

Armstrong Day (intercalary)

July
August
September

Empire Day (intercalary)

October
November
December

Yulestice (intercalary)

Days

Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Solday
Starday
Terraday

Traditionally, Imperials worked 7 days out of 10. Sunday and Terraday, known as "weak end" days, were general days off; everyone had one additional day off during the tenday. This middle day off varied; some organizations closed on a specific day (often Friday), while others gave different people different days off.

Monthly Calendar

(identical for every month)

Sun	Mon	Tue	Wed	Thu	Fri	Sat	Sol	Sta	Ter
1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30

Holidays

Year Day (Intercalary preceding January 1)
Walpurgis (Intercalary following March 30)
Armstrong Day (Intercalary following June 30) [originally July 20]
Empire Day (Intercalary following September 30) [commemorates signing of Articles of Empire on 24 Nov 2153]
Yulestice (Intercalary following December 30) [originally December 21]

The five major Imperial holidays are intercalary; that is, they are not assigned to any month or day.

The year end cycle looks like this:

December 30 (Terraday) is followed by
Yulestice (intercalary) is followed by
Year Day (intercalary) is followed by
January 1 (Sunday)