Description
Return whole fictional age under a supplied birthday flag.
Story planning separates the order of telling from fictional chronology, continuity records and practical writing budgets. Explicit labels, counts and invented calendar rules can make a local convention consistent without deciding narrative quality or inferring facts from manuscript prose.
Return whole fictional age under a supplied birthday flag.
When to use this tool
Use Fictional Age Birthday Offset when checking a supplied story-continuity, chronology, calendar or drafting-budget convention.
How to use the tool and how it works
- Enter birthYear, currentYear, birthdayOccurred. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read age. Use the output convention below.
Return whole fictional age under a supplied birthday flag. age = currentYear-birthYear-(birthdayOccurred ? 0 : 1); require the resulting age nonnegative.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| birthYear | Birth Year | Required. Safe integer. |
| currentYear | Current Year | Required. Safe integer. |
| birthdayOccurred | Birthday Occurred | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| age | Age | Required. Safe integer. |
{
"input": {
"birthYear": 2000,
"currentYear": 2026,
"birthdayOccurred": false
},
"output": {
"age": 25
}
}Limitations and assumptions
- This assumes year-based birthdays; dates, actual birthday occurrence and alternative aging systems are not checked.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use the manuscript, scene outline and the chosen style/calendar policy for a complete editorial review; interpret numerical budgets in their narrative context.
References
Similar or alternative tools
- Fictional Calendar Two Moon Phase Offset
Advance two fictional moon phases under fixed periods.
- Fictional Calendar Cycle Phase Token
Return a fictional calendar's cycle and nonnegative phase.