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Browse all expert articles, guides, and tools related to Calendar Tools.
Why "current year minus birth year" gives the wrong age, the correct calendar-aware algorithm, and how leap years and February 29th birthdays are handled.
Calculating working days between two dates means excluding weekends and public holidays from the total. Learn the formula, a worked example, and when this matters most.
Finding the exact age gap between two people involves more than subtracting birth years. Learn the correct method to calculate age difference in years, months, and days.