1. What is the 90 Day Due Date Calculator?

The 90 Day Due Date Calculator calculates the date that is exactly 90 days after a given start date. This is commonly used for project deadlines, payment terms, or other time-sensitive calculations.

2. How Does the Calculator Work?

The calculator uses a simple date addition formula:

Where:

• \( Start\ Date \) — The initial date in YYYY-MM-DD format
• \( 90\ days \) — The fixed period to add

Explanation: The calculation accounts for varying month lengths and leap years to ensure accurate date calculation.

3. Importance of Due Date Calculation

Details: Accurate due date calculation is crucial for project planning, contract terms, payment schedules, and legal deadlines where precise timing is required.

4. Using the Calculator

Tips: Enter the start date in YYYY-MM-DD format. The calculator will automatically compute the date exactly 90 days after the start date.

5. Frequently Asked Questions (FAQ)

Q1: Does this include weekends and holidays?
A: Yes, the calculation includes all calendar days (weekends and holidays included) unless otherwise specified in your contract or agreement.

Q2: What if my start date is February 29 (leap day)?
A: The calculator properly handles leap years and will calculate the correct date 90 days after February 29.

Q3: Can I calculate periods other than 90 days?
A: This calculator is specifically for 90-day calculations. For other periods, you would need a different calculator.

Q4: Is the time of day considered in this calculation?
A: No, this calculation is date-based only and doesn't consider specific times.

Q5: What's the maximum/minimum date range supported?
A: The calculator supports dates from 1901 to 2099, which is the typical range supported by most browsers' date inputs.