Time, Calendars & Mortal Reckoning · The World of Eldarûn

This entry establishes the common structure by which time is measured, recorded, communicated, and historically reckoned across Eldarûn.

The physical passage of time is older than civilization.

Day and night existed before mortal clocks.

Seasonal cycles existed before agriculture.

The moons moved before anyone named them.

The stars crossed the heavens before priests interpreted them or sailors navigated by them.

Mortal calendars did not create time.

They created systems for counting it.

The central principle of Eldarûnian chronology is therefore:

Time is a physical reality governed by celestial motion; calendars are mortal systems imposed upon that reality for practical use.

The common civil calendar used throughout much of the known world follows a 365-day year, twelve months, seven-day weeks, and a leap-year correction that keeps civil reckoning aligned with the solar year.

Regional cultures may maintain additional systems.

Those systems do not create different physical time.

They create different ways of naming the same passing days.

1. The Physical Basis of Time

Time in Eldarûn is measured against recurring physical patterns.

The most important are:

the rotation of Eldarûn
the apparent daily movement of the sun
Eldarûn's annual movement relative to the sun
the orbital cycles of Seryn
the orbital cycles of Nymara
the orbital cycles of Kharos
seasonal changes
stellar recurrence
predictable celestial alignments

The Star-Sea established the foundational possibility of:

movement
recurrence
sequence
distance
celestial pattern
and ordered cycles

The Star-Sea does not consciously operate clocks.

It does not decide when morning begins.

It is the deeper cosmological principle through which stable recurrence exists at all.

Mortals later turned those recurrences into calendars.

2. The Day

A standard Eldarûnian civil day is divided into:

24 hours

Each hour contains:

60 minutes

Each minute contains:

60 seconds

These divisions are principally important to:

scholars
navigators
astronomers
artificers
engineers
military officers
large cities
bureaucracies
clockmakers
magical researchers
and professions requiring precision

Ordinary people do not necessarily speak in exact minutes throughout daily life.

A farmer may say:

before dawn
shortly after sunrise
near midday
late afternoon
at dusk
after supper
near midnight

rather than naming an exact hour.

Both systems describe the same day.

2.1 Beginning of the Civil Day

For formal Common Reckoning, a new calendar day begins at:

midnight

This standard exists because it gives governments, merchants, courts, military institutions, archives, and long-distance travelers a consistent date boundary independent of local sunrise and sunset.

Not every culture thinks of the lived day this way.

Some traditions begin sacred observances at:

sunset
sunrise
first light
moonrise
or another ritual threshold

Those are ceremonial or cultural day-boundaries.

The civil date changes at midnight.

2.2 Dawn, Midday, Dusk, and Midnight

Four broad solar markers remain nearly universal in ordinary speech:

Dawn — the transition into daylight.

Midday — the central solar portion of the day.

Dusk — the transition out of daylight.

Midnight — the midpoint of the conventional night and the beginning of a new civil date.

The exact clock-time of dawn and dusk changes according to:

latitude
season
terrain
weather
and local horizon

Therefore, dawn is a natural event rather than a permanently fixed hour.

3. Common Timekeeping

Precise clocks exist in Eldarûn, but they are not equally available everywhere.

Time may be measured using:

sun position
shadow markers
sundials
water clocks
sand clocks
candle marks
mechanical clocks
bell towers
astronomical instruments
magical timing devices
calibrated ward cycles
shift bells
military watches

Large cities, major temples, universities, fortified holds, ports, and technologically sophisticated settlements may possess highly accurate public timekeeping.

Smaller villages may live primarily by:

daylight
work rhythm
meal times
bells
animal behavior
and local custom

A person does not require a pocket clock to understand that afternoon is ending.

3.1 Clock Time and Common Speech

Formal records may identify an exact hour.

Ordinary speech usually remains less mechanical.

A legal document might record:

the ninth hour and twenty-three minutes

while a witness might simply say:

late morning

Both can be correct.

The level of precision depends upon why the time matters.

4. Watches and Shift Time

Military units, ships, mines, city guards, caravans, Rootveil settlements, and other organizations often divide work into watches.

A watch is not a universal fixed astronomical unit.

It is an operational period.

Its duration may vary according to:

institution
profession
local law
season
danger
available personnel
daylight
underground conditions

Common military and guard language may include:

dawn watch
morning watch
midday watch
dusk watch
first night watch
deep watch
last watch

Ships may divide watches differently from mountain forts.

Dwarven holds may use work-shift bells.

Rootveil settlements may rely upon artificial cycles because direct sunlight is absent.

The important distinction is:

an hour is a standardized unit of time; a watch is a scheduled duty period.

5. The Seven-Day Week

The common civil calendar uses a:

seven-day week

Seven consecutive days constitute one complete week.

For cross-cultural civil use, the days may be identified simply as:

Firstday
Secondday
Thirdday
Fourthday
Fifthday
Sixthday
Seventhday

Firstday begins the conventional civil week.

Seventhday closes it.

This ordinal system is intentionally simple.

It developed as a practical cross-cultural form that could be used without requiring every people to accept another culture's gods, saints, kings, or mythic founders as the names of their days.

5.1 Regional Weekday Names

Cultures may possess their own names for the seven days.

These may derive from:

gods
ancestors
celestial bodies
markets
traditional labor
religious rites
old rulers
local mythology
seasonal custom

Those names are cultural vocabulary.

They do not alter the seven-day structure.

A Thalassari sailor and a Valthen magistrate may use different traditional names for the same weekday while agreeing on its position in the civil week.

5.2 Common Week-Based Terms

A period of seven days is a week.

A period of fourteen days is commonly called a fortnight.

Longer spans are generally counted in:

weeks
months
seasons
or years

depending upon context.

6. The Common Year

The standard civil year contains:

365 days

A leap year contains:

366 days

The year is divided into:

12 months

The common year begins on:

1 Janneth

and ends on:

31 Decaryn

The civil calendar is an approximation of a physical astronomical cycle.

Eldarûn's actual seasonal, or tropical, year is approximately:

365.2422 days

This is the cycle most important to the long-term recurrence of:

seasons
solstices
equinoxes
agriculture
and the alignment of the civil calendar with the seasonal year

Eldarûn's sidereal year—its orbital period measured relative to the distant stars—is approximately:

365.2564 days

The difference between these values is small in ordinary life but important in precise astronomy.

Therefore, three related but distinct terms must not be confused:

Common year — the ordinary 365-day civil calendar year.

31 days

Associated High Sign:

Veil

The complete civil year therefore contains:

365 days

before leap correction.

8. The Twelve High Signs and the Calendar

Each month is traditionally associated with one of the Twelve High Signs.

These are:

Ember
Mirror
Covenant
Storm
Dusk
Thorn
Vigil
Blood
Starfall
Stone
Clockwork
Veil

These names also survive within the traditions of the Circle of the Sign and its Twelve lawful Banners.

The relationship is important but should not be misunderstood.

The calendar does not mean that every person born during Janneth is mystically an Ember-born warrior.

The High Signs function simultaneously as:

old celestial markers
symbolic divisions of the year
cultural images
historical astronomical references
and, in later institutional history, Banner Signs of the Circle

The Zodiac Knights did not turn the calendar into twelve supernatural personality categories.

Their order drew upon an already meaningful celestial-symbolic framework and formalized those Signs into disciplines, oaths, and Banner traditions.

The High Signs are therefore culturally powerful.

They are not simplistic destiny labels.

9. Months Are Not Lunar Cycles

Despite the word month historically carrying lunar associations in some cultures, the twelve civil months of Eldarûn are not direct copies of any single moon's orbit.

The three principal lunar phase cycles are approximately:

Seryn — 29.53059 days

Nymara — 46.2128 days

Kharos — 64.2470 days

The civil calendar therefore cannot remain permanently synchronized with all three moons.

This is intentional.

The common calendar is fundamentally:

solar-civil

rather than purely lunar.

Lunar cycles are tracked separately.

This allows the calendar to remain stable for agriculture, law, taxation, trade, contracts, military planning, birthdays, and historical records while astronomers and specialized cultures maintain additional lunar tables.

Detailed orbital mechanics, including sidereal periods, draconic periods, nodal regression, eclipse geometry, and the Grand Syzygy, are governed by Celestial Structure of Eldarûn.

10. Leap Years

The civil calendar requires periodic correction because Eldarûn's physical seasonal year is not exactly 365 whole days.

The actual tropical year is approximately:

365.2422 days

If every civil year contained exactly 365 days without correction, the calendar would slowly drift away from:

the seasons
solstices
equinoxes
agricultural timing
and other annually recurring solar conditions

A leap year therefore adds one additional day:

29 Febren

The standard leap rule is:

a year divisible by 4 is normally a leap year
a year divisible by 100 is not a leap year
unless that year is also divisible by 400

This produces a long-term average civil year of:

365.2425 days

which remains extremely close to Eldarûn's approximately 365.2422-day tropical year.

The leap correction is mathematical rather than religious.

Cultures may attach ceremonies or superstitions to 29 Febren.

Those traditions do not cause the leap day to exist.

10.1 The Twenty-Ninth of Febren

29 Febren exists only during leap years.

Because it interrupts the ordinary annual pattern, many cultures regard it as an unusual threshold day.

Different traditions may treat it as:

auspicious
unlucky
liminal
legally awkward
sacred
humorous
or completely ordinary

No universal supernatural effect occurs merely because it is 29 Febren.

11. Seasons

Eldarûn experiences ordinary astronomical seasons because the planet's rotational axis is tilted relative to the plane of its orbit around the sun.

The established planetary axial tilt is approximately:

23.44 degrees

As Eldarûn completes its approximately 365.2422-day seasonal year, this tilt changes the angle and duration of sunlight received by different latitudes.

This produces familiar large-scale patterns of:

changing day length
changing solar elevation
seasonal warming
seasonal cooling
solstices
equinoxes
and opposite seasonal timing between the northern and southern hemispheres

The calendar recognizes the passage of this solar year, but months are not assigned one universal global climate.

Eldarûn is a planetary world.

Therefore:

northern and southern regions experience opposite broad seasonal phases
equatorial regions may experience wet and dry cycles rather than strong winter-summer contrast
coastal climates differ from inland climates
high mountains differ from surrounding lowlands
deserts, jungles, tundras, and Rootveil environments experience the year differently

Terms such as:

spring
summer
autumn
winter

are useful in climates where those four seasonal transitions are meaningful.

They are not mandatory descriptions of every region.

A tropical civilization may structure its year around:

flood
rain
heat
dry season

instead.

A polar people may define the year by:

long light
first freeze
deep winter
thaw
migration

Latitude establishes the broad solar-seasonal framework.

Regional:

elevation
geography
ocean currents
prevailing winds
mountain systems
and local ecology

determine how those seasons are actually experienced.

The civil calendar remains the same.

Regional seasons do not.

12. Agricultural Reckoning

Farmers rarely experience the calendar as twelve abstract names alone.

Agricultural life is measured through practical cycles such as:

first thaw
soil preparation
planting
lambing
calving
migration
pollination
irrigation
summer heat
early harvest
late harvest
first frost
winter storage

These vary by region.

A crop planted in Averil in one kingdom may be planted in Maroven or Maeren elsewhere.

Serenya's priests, agricultural officers, landowners, and experienced farmers therefore maintain regional planting tables rather than assuming that one universal month guarantees one universal growing condition.

13. Lunar Reckoning

The three moons create additional systems of reckoning layered over civil time.

13.1 Seryn Reckoning

Seryn has a visible synodic phase cycle of approximately:

29.53059 days

Because Seryn is the nearest, most visually dominant, and fastest-cycling of the three moons, it is the moon most commonly tracked in everyday life.

Its phases are especially relevant to:

tides
fishing
night travel
certain religious observances
Elunari traditions
hunting customs
coastal work

13.2 Nymaran Reckoning

Nymara has a visible synodic phase cycle of approximately:

46.2128 days

Ordinary speech therefore describes its phase cycle as:

about forty-six days

Nymaran reckoning is frequently tracked by sailors, tide-readers, navigators, Thalassari, astronomers, and coastal settlements because its relationship with Seryn materially affects tidal reinforcement and opposition.

13.3 Kharic Reckoning

Kharos has a visible synodic phase cycle of approximately:

64.2470 days

Ordinary speech therefore describes its phase cycle as:

about sixty-four days

Kharic cycles are especially useful for long astronomical observations, Shardwake tracking, moonstone-fall studies, ritual astronomy, and long-cycle magical records.

13.4 Triple-Lunar Tables

Professional astronomers, advanced navigators, major ports, observatories, and institutions concerned with celestial timing may maintain tables showing the simultaneous positions of Seryn, Nymara, and Kharos.

These tables are essential when predicting reinforced tides, opposed tides, eclipse possibilities, unusual moonrise combinations, major alignments, near-syzygies, and the approach of the Grand Syzygy.

Phase alignment alone does not guarantee an eclipse. The moons must also occupy suitable positions relative to their orbital nodes.

14. The Grand Syzygy in Long Reckoning

The Grand Syzygy, commonly called the Threefold Dark, is the rare astronomical configuration in which Eldarûn passes between its sun and all three moons closely enough for Seryn, Nymara, and Kharos to enter Eldarûn’s shadow during the same celestial event.

Its controlling geometry is:

Sun → Eldarûn → Seryn / Nymara / Kharos

The Threefold Dark is therefore a triple lunar eclipse, not a solar eclipse and not a simultaneous new-moon disappearance.

The recurrence interval is approximately:

13,170.64 days

or:

36.06 solar years

Because the recurrence is slightly longer than thirty-six civil years, the Threefold Dark does not return on one permanently fixed calendar date.

Relative to a simple thirty-six-year anniversary, each recurrence shifts by roughly:

three weeks

and must therefore be predicted astronomically rather than commemorated as a permanently fixed-date celestial event.

The interval is long enough for Grand Syzygies to function as generational historical markers.

A person might speak of an event as occurring:

three years before the last Threefold Dark

or:

in the second year after the Syzygy

even when a formal Mortal Reckoning date also exists.

Detailed eclipse mechanics are governed by Celestial Structure of Eldarûn.

15. Formal Date Structure

The standard formal date format is:

day — month — year — era

For example:

18 Jular, 842 MR

or in highly formal archival notation:

18 Jular, Year 842 Mortal Reckoning

The year used above is only an example of formatting.

It does not establish the current narrative year.

Shorter records may use:

18 Jular

when the year is obvious from context.

Contracts, military orders, court documents, historical records, birth records, and long-distance correspondence should normally include the year.

16. The Major Historical Ages

Eldarûnian history is too ancient and unevenly recorded to be represented by one uninterrupted numerical calendar extending back to the First Rupture.

Historians instead divide the known past into broad ages.

The principal high-level framework is:

These divisions describe major historical conditions rather than identical spans of time.

17. The First Divine Age

The First Divine Age is the age dominated by the Old Gods.

It belongs to a period when:

the ley remained comparatively wild
the Old Gods ruled openly
regions were unstable
mortal civilization had not yet developed into the later world
chronology was not recorded through a universal mortal system

Exact year numbers for the First Divine Age are generally impossible to establish.

Events are therefore dated through:

relative sequence
geological evidence
divine tradition
surviving ruins
celestial reconstruction
magical dating
later historical interpretation

A scholar is more likely to write:

late First Divine Age

than:

Year 14,281 of the First Divine Age

because no trustworthy universal yearly count survives from that period.

18. The Ascendant Age

The Ascendant Age follows the overthrow, binding, or removal from open rule of the Old Gods and the rise of the Eleven as the governing divine order.

Dates within this period may be written using:

AA — Ascendant Age

where reliable chronological reconstruction exists.

For example:

417 AA

means:

Year 417 of the Ascendant Age

The Ascendant Age includes the long transition during which:

the Eleven established divine order
ley became increasingly structured
mortal peoples spread and stabilized
early civilizations emerged
recognizable historical continuity became possible

Not every region began written chronology at the same time.

AA dating is therefore primarily a scholarly reconstructed framework for very ancient history.

19. The Mortal Age

The present broad historical age is the:

Mortal Age

This is the period in which mortal civilizations become the principal agents of recorded political history.

The most widely used civil year-count within the Mortal Age is:

Mortal Reckoning

abbreviated:

The Mortal Age is not the age in which gods disappear.

The Eleven remain part of the world.

It is called the Mortal Age because:

kingdoms
peoples
cities
empires
institutions
migrations
wars
trade systems
and recorded history

are increasingly shaped by mortal action rather than open divine rule.

20. The Beginning of Mortal Reckoning

Mortal Reckoning begins with the historical convention known as:

the First Concord

The first year of the common civil count is:

1 MR

The First Concord represents the point selected by later historians and early inter-civilizational authorities as the beginning of a sufficiently connected mortal historical order for shared chronology to become practical.

It does not mean:

the first mortal was born that year
civilization began that year
all kingdoms were united
all peoples adopted the calendar immediately
the gods ceased intervening

It is a chronological anchor.

Its deeper political and historical circumstances belong in the History of Eldarûn codex.

20.1 No Required Present-Year Lock

The existence of Mortal Reckoning does not presently assign a specific MR year to the events of BONDS, The Tale of Sylas, or Quest Board Rejects.

That year should be established only when the master historical chronology is constructed carefully enough to support it.

Until then:

the present narrative age is the Mortal Age, but its exact MR year remains intentionally unassigned.

This prevents premature chronology from forcing later historical events into an arbitrary number.

21. Local and Institutional Reckonings

Mortal Reckoning is widely useful.

It is not the only year-count used in Eldarûn.

Kingdoms, religions, cities, dynasties, military orders, and ancient institutions may date records from events important to themselves.

Possible anchors include:

coronations
dynasty foundations
wars
migrations
city foundings
religious revelations
disasters
institutional foundations
magical catastrophes
liberation
conquest

Such systems are called local reckonings or institutional reckonings.

They are valid within their context.

They do not replace the common historical framework.

21.1 After Dawn

One established example is the Sentinel dating form:

After Dawn

Surviving Sentinel records may identify years such as:

Year 311 After Dawn

This is an institutional historical count associated with the Sentinels of the Dawn.

It is not the same thing as:

311 MR

A historian converting an After Dawn date into Mortal Reckoning must know the chronological relationship between the Sentinel anchor event and the First Concord.

This distinction is important whenever old records are recovered.

A number without its reckoning can be dangerously misleading.

22. Dynastic and Royal Years

Some monarchies date documents according to a ruler's reign.

For example:

the sixth year of Queen X's reign

This form is especially common in:

royal decrees
tax records
court chronicles
military campaigns
local legal documents

Such dating can coexist with MR.

A formal document might identify both:

18 Jular, 842 MR — Sixth Year of the Reign of Queen X

This allows local legitimacy and international chronology to coexist.

23. Religious Calendars

Religions may maintain sacred calendars layered over Common Reckoning.

These may identify:

feast days
fasts
mourning periods
planting rites
harvest rites
pilgrimage seasons
celestial observances
divine anniversaries
funerary periods

Different traditions may begin sacred observances at:

sunset
sunrise
moonrise
first bell
another ritual threshold

These sacred systems do not alter the civil date.

A holy day can begin ceremonially at sunset while the legal date does not change until midnight.

24. Regional Calendars

Some cultures possess older calendars that predate their adoption of Common Reckoning.

These may differ in:

month names
festival placement
new-year tradition
lunar emphasis
seasonal divisions
local era counts

The common civil calendar does not require those traditions to disappear.

Instead, major societies often maintain two systems:

common date for trade and external affairs

and

traditional date for cultural life

This is especially likely among:

long-lived elven societies
isolated dwarven holds
Thalassari maritime cultures
Serathi traditional communities
Tazhuran institutions
deeply rooted Veydran clans
Rootveil peoples

Later cultural codices may define these systems individually.

25. Elven Reckoning and Long Life

Elves use the same physical days and years as everyone else.

Their lifespan does not change the length of a year.

It changes the way years are experienced.

Elven records often give unusual weight to:

generations
celestial recurrences
dynastic periods
long mourning intervals
century-scale political memory

An event eighty years ago may remain living memory rather than history to an elf who witnessed it personally.

For this reason, elven archives may use both:

formal MR dating
and descriptive living-memory references

such as:

during the third flowering after the eastern war

or:

before the old council divided

These forms have cultural meaning.

They do not replace exact chronology when exact chronology is required.

26. Dwarven Reckoning

Dwarven cultures possess an especially strong relationship with structural time.

A dwarf may think about a century in terms of:

forge generations
tunnel expansions
wall replacements
pressure records
lineage stewardship
inherited work

Dwarven holds commonly maintain extremely durable chronological archives because infrastructure itself depends upon knowing:

when something was built
when it was repaired
how long a seam has been worked
when pressure changed
when a support was replaced
how long a ward has remained stable

Therefore, dwarven societies may preserve local hold-year systems alongside MR with exceptional precision.

The calendar is not abstract to them.

Time is maintenance history.

27. Rootveil Reckoning

The Rootveil creates a special problem for natural timekeeping.

Much of it possesses:

no sunrise
no sunset
no visible stars
no visible moons
no direct seasonal sky

Rootveil civilizations therefore rely heavily upon artificial and biological timing systems.

These may include:

mechanical clocks
water clocks
shift bells
fungal bloom cycles
feeding cycles
thermal patterns
calibrated ley rhythms
scheduled light changes
inherited communal routines

Settlements connected regularly with the Surface can synchronize to the civil calendar.

Deep isolated societies may maintain entirely local cycle-counts.

This does not mean time moves differently underground.

It means the natural celestial markers used to observe time are absent.

28. Birthdays, Anniversaries, and Personal Age

A person's civil age advances according to completed solar years.

Birthdays are ordinarily observed on the same month and day each year.

Personal anniversaries may commemorate:

birth
marriage
oath
military service
adoption
apprenticeship
coronation
settlement
death
religious vows

Cultures vary in which anniversaries matter.

The common calendar merely provides a shared way to date them.

People born on 29 Febren possess a legal complication in non-leap years.

Different jurisdictions may observe that anniversary on:

28 Febren
1 Maroven
or the final legal moment of Febren

Specific legal practice belongs to regional law.

The actual birth date remains 29 Febren.

29. Historical Dating and Uncertainty

Ancient dates should not be treated as perfectly precise merely because modern scholars assign numbers to them.

Historical confidence varies.

A date may be:

exact
strongly reconstructed
approximately reconstructed
traditionally accepted
disputed
legendary
unknowable

Responsible scholarship distinguishes among these categories.

A modern treaty signed on 18 Jular, 842 MR might be known exactly.

The binding of an Old God may only be placeable within a broad span of the Ascendant Age.

Precision should reflect evidence.

The World Bible should never use an exact ancient date merely to make a timeline look cleaner than the surviving history allows.

30. Why Multiple Reckonings Matter

Multiple calendars and era systems are not continuity errors when their relationship is understood.

They are evidence of history.

A Sentinel writes:

Year 311 After Dawn

A modern merchant writes:

842 MR

A royal court records:

the sixth year of the Queen

An Elunari priest marks:

the second dark of Seryn

A Thalassari navigator records:

Nymara rising against Seryn's waning quarter

All may be describing positions within the same physical timeline.

The problem is not multiple reckonings.

The problem is failing to identify which reckoning a number belongs to.

Therefore, formal chronological doctrine requires that historical year numbers carry their era or institutional marker whenever ambiguity is possible.

31. What Is Fixed

The following chronological structures are fixed under Common Reckoning:

Day

24 hours
60 minutes per hour
60 seconds per minute
civil date changes at midnight

Week

7 days
Firstday through Seventhday in common cross-cultural usage
Firstday begins the civil week

Year

common civil year — 365 days
leap civil year — 366 days
tropical or seasonal year — approximately 365.2422 days
sidereal year — approximately 365.2564 days
12 civil months
new year begins on 1 Janneth
the civil calendar is designed to remain synchronized with the tropical year
Eldarûn's seasonal cycle is produced principally by its approximately 23.44° axial tilt during its annual orbit around the sun

Months

Janneth — 31 days — Ember
Febren — 28/29 days — Mirror
Maroven — 31 days — Covenant
Averil — 30 days — Storm
Maeren — 31 days — Dusk
Juneth — 30 days — Thorn
Jular — 31 days — Vigil
Augren — 31 days — Blood
Septen — 30 days — Starfall
Octeran — 31 days — Stone
Novaren — 30 days — Clockwork
Decaryn — 31 days — Veil

Leap Correction

every fourth year normally
century years omitted
century years divisible by 400 restored
leap day is 29 Febren

Historical Ages

Formal Era Abbreviations

AA — Ascendant Age
MR — Mortal Reckoning

Mortal Reckoning

begins at 1 MR
anchored to the First Concord
current narrative MR year remains intentionally unassigned

Local Reckonings

permitted and expected
must retain an identifiable historical anchor
After Dawn is an established institutional example

32. What This Entry Does Not Yet Establish

This codex does not yet establish:

the exact present MR year of BONDS
the exact present MR year of Quest Board Rejects
the absolute number of years separating the First Divine Age, Ascendant Age, and Mortal Age
the precise date of every major historical event
every culture's traditional weekday names
every kingdom's local calendar
every religious festival
every agricultural season
every lunar observance
the precise founding date represented by Year 1 After Dawn
the complete chronology of the Sentinels
exact regional solstice and equinox traditions

Those subjects belong to:

regional codices
religious codices
faction histories
and the History of Eldarûn

The framework established here allows those later systems to be added without creating contradictory time.

33. Why This Entry Matters

A shared world requires shared chronology.

Without a common calendar, one series could casually state that:

Febren has thirty days
a week contains eight days
the year has thirteen months
a voyage lasted six weeks when another source means something different by a week
a historical event occurred in 311 without identifying the era
a moon cycle equals a calendar month when it physically does not

Those errors compound quickly.

The calendar exists to prevent them.

The purpose of Mortal Reckoning is not to erase local culture.

It is to provide a chronological language that allows:

merchants
soldiers
kings
historians
adventurers
priests
sailors
scholars
and readers

to understand when something happened.

34. Foundational Principle

The doctrine of time in Eldarûn can be reduced to one statement:

The heavens create recurring physical cycles; mortals create calendars so those cycles can be remembered, coordinated, and shared.

One world may contain many reckonings.

It still contains only one passage of time.

The calendar may change.

The name of an age may change.

A king may number years from his coronation.

A lost order may count centuries After Dawn.

A priest may measure a vigil by moonrise.

A farmer may remember the year by the frost that killed the wheat.

But beneath every system:

the day still turns,

the moons still move,

the seasons still change,

and the stars continue their patient passage across the heavens.

Summary

Eldarûn uses a common civil calendar built around a 365-day civil year.

A leap year contains 366 days.

The civil calendar approximates an actual astronomical seasonal cycle.

Eldarûn's tropical, or seasonal, year is approximately:

365.2422 days

Its sidereal year is approximately:

365.2564 days

The leap-year system prevents the 365-day civil count from gradually drifting away from the seasons.

Eldarûn's approximately 23.44° axial tilt provides the principal astronomical cause of ordinary seasonal change, including changing day length and opposite broad seasonal timing between the northern and southern hemispheres.

The year contains twelve months:

Their lengths follow the established solar-civil structure, with 29 Febren added during leap years.

The twelve months correspond symbolically to the Twelve High Signs:

Ember
Mirror
Covenant
Storm
Dusk
Thorn
Vigil
Blood
Starfall
Stone
Clockwork
Veil

A week contains seven days.

A civil day contains twenty-four hours and changes date at midnight.

The common calendar is solar rather than purely lunar because Eldarûn's three moons follow independent phase cycles:

Seryn — 29.53059 days

Nymara — approximately 46.2128 days

Kharos — approximately 64.2470 days

Those lunar cycles are tracked separately from the civil months.

Approximately every 13,170.64 days, or 36.06 solar years, the three lunar cycles and their eclipse-node relationships converge closely enough to produce the Grand Syzygy.

The resulting triple lunar eclipse is commonly known as:

the Threefold Dark

Because the recurrence is slightly longer than thirty-six civil years, the event does not return on one fixed calendar date.

Its occurrence shifts by roughly three weeks relative to a simple thirty-six-year anniversary and must be calculated astronomically.

Grand Syzygies therefore serve as powerful generational and historical reference points.

History is divided broadly into:

The common modern year-count is Mortal Reckoning, abbreviated MR, beginning with the First Concord at 1 MR.

Ancient Ascendant Age dates may use AA.

Local and institutional systems remain valid alongside Common Reckoning.

The Sentinel phrase Year 311 After Dawn is one such institutional historical system and must not be confused with 311 MR.

The exact present MR year of the narrative world remains intentionally unassigned until the History of Eldarûn establishes the master chronology.

The governing rule is:

One world, one passage of time, many ways of remembering it.

ELDARÛN WORLD BIBLE · Audited v3.1Part II: The Physical World
Time, Calendars & Mortal Reckoning
Full supplied entry, including any stated canon limits and open questions.