This template uses Lua :
This template returns the number of weeks and days that have elapsed between two dates. If the second set of parameters is not included it will automatically calculate the pereiod between a given date and today.
Each date can be entered in a single parameter, or each date can be entered as three parameters: year, month, day.
{{age in weeks and days|month1=6|day1=14|year1=1946|month2=8|day2=19|year2=1946}} → 9 weeks and 3 days{{age in weeks and days|1946|6|14|1946|8|19}} → 9 weeks and 3 days{{age in weeks and days|1946-6-14|1946-8-19}} → 9 weeks and 3 days{{age in weeks and days|14 June 1946|Aug 19, 1946}} → 9 weeks and 3 days{{age in weeks and days|month1=11|day1=07|year1=2012}} → 624 weeks and 5 days{{age in weeks and days|7 November 2012}} → 624 weeks and 5 daysAn error is shown if an entered date is not valid (1900 was not a leap year).
{{age in weeks and days|31 January 1899|29 February 1900}} → Error: Second date should be year, month, day
Birth, death and age templates
birth, death, age
Combined BDA template Description / use {{BirthDeathAge }} Combines functions of {{Birth date}}, {{birth-date}}, {{birth date and age}}, {{birth year and age}}, {{death date}}, {{death-date}}, {{death date and age}}, and {{death year and age}}.
Birth templates Description / use {{Birth date }} To display a birth date and related hidden metadata. {{Birth-date }} {{Birth date and age }} {{Birth date}} with suffix '(age N )'.{{Birth date and age2 }} {{Birth date and age}} plus age as of a specified date.{{Birth-date and age }} As {{Birth date and age}} , but accepts dates in text form ('15 June 1950', 'June 15, 1950', 'June 1950', etc.). {{Birth year and age }} Year of birth and approximate age. {{Birth based on age as of date }} To display approximate birth year and current age given a particular date (e.g. when a dated reference mentions the age of a person), only works for living people. {{Birth based on age at death }} To display approximate birth year based on age at death, or on age at a specific date if death date isn't known.
Death templates Description / use {{Death date }} To display a death date and related hidden metadata. {{Death-date }} {{Death date and age }} {{Death date}} with suffix '(aged N )'; also called with {{event date and age}} .{{Death-date and age }} As {{Death date and age}} , but accepts dates in text form ('15 June 1950', 'June 15, 1950', 'June 1950', etc.). {{Death date and given age }} To display a death date and specified age. {{Death year and age }} To display a year of, and approximate age at death.
age only
Reverse-determined age template Description / use {{Age }} Age based on number of complete years between two dates. {{Age nts }} {{Age}} with output formatted for use in number sortable tables .{{Age as of date }} Current age (in years) from a known age at a specified date. {{Age for infant }} Current age for infant: months and days up to one year, years and months up to three years, and years beyond age 3.
