Understanding the precision and methodology behind our advanced age calculations
We use the advanced Temporal API to parse and validate dates with timezone awareness. This ensures accurate handling of dates across different time zones and calendar systems.
Temporal.PlainDate.from(dateString)Our algorithm calculates the exact difference between dates, accounting for varying month lengths and leap years using the until() method.
birthDate.until(currentDate)For February 29 birthdays in non-leap years, the birthday is observed on February 28.
For February 29 birthdays in non-leap years, the birthday is observed on March 1.
Years divisible by 4 are leap years, except century years unless divisible by 400.
Validate date formats and ensure birth date is not in the future.
Convert dates to the specified timezone for accurate local calculations.
Compute years, months, and days between birth date and target date.
Apply the selected leap year policy for February 29 birthdays if applicable.
Convert to total days, weeks, hours, minutes, and seconds lived.
Calculate the next birthday date and days remaining until that date.
For premature infants, we calculate corrected age by adjusting for the number of weeks born before 40 weeks gestation:
Corrected Age = Chronological Age - (40 - Gestational Age)
This provides a more accurate developmental age for premature babies, important for medical assessments and milestone tracking.
We provide two types of month calculations for different use cases:
Modern date/time handling with built-in timezone support and precise calculations.
Type-safe implementation ensuring reliable and error-free calculations.
Runtime validation ensuring all inputs meet strict criteria before processing.
Our calculations are accurate to the second, accounting for all calendar complexities including leap years, daylight saving time, and varying month lengths. Trusted by developers and professionals worldwide.