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Date Calculation Formula:
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The 90 Days After Date Calculator calculates the date that is exactly 90 days after a given start date. This is useful for various purposes including project planning, legal deadlines, medication schedules, and more.
The calculator uses a simple date addition formula:
The calculation accounts for varying month lengths and leap years to ensure accuracy.
Details: Accurate date calculations are crucial for meeting deadlines, scheduling follow-ups, compliance with regulations, and planning future events.
Tips: Enter the start date in YYYY-MM-DD format. The calculator will display the date exactly 90 days after the entered date.
Q1: Does this include weekends and holidays?
A: Yes, the calculation includes all days (weekdays, weekends, and holidays) - it's a pure 90-day count from the start date.
Q2: What if I need business days only?
A: This calculator counts calendar days. For business days (excluding weekends and holidays), a different calculation would be needed.
Q3: How accurate is this for leap years?
A: The calculation is completely accurate as it uses PHP's DateTime functions which properly account for leap years.
Q4: Can I calculate dates other than 90 days?
A: This specific calculator is designed for 90-day calculations. For other time periods, a different calculator would be needed.
Q5: What's the maximum/minimum date range?
A: The calculator can handle any date within the range supported by PHP's DateTime class (typically year 0 to 9999).