1. What is the Days Calculator?

The Days Calculator calculates the number of days between two dates. It's useful for various purposes including project planning, event counting, and duration calculations.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( Start\ Date \) — The beginning date of the period
• \( End\ Date \) — The ending date of the period

Explanation: The calculation counts all calendar days between the two dates, including the end date but excluding the start date.

3. Importance of Days Calculation

Details: Accurate day counting is essential for project management, legal contracts, financial calculations, and personal event planning.

4. Using the Calculator

Tips: Enter both start and end dates in the format YYYY-MM-DD. The calculator will automatically compute the number of days between them.

5. Frequently Asked Questions (FAQ)

Q1: Does the calculator include both start and end dates?
A: By default, it includes the end date but excludes the start date in the count.

Q2: How does it handle leap years?
A: The calculation automatically accounts for leap years in the period.

Q3: What's the maximum date range it can handle?
A: The calculator can handle any valid date range within the limits of PHP's DateTime class.

Q4: Does it count business days only?
A: No, this calculator counts all calendar days. For business days, a different calculator would be needed.

Q5: Can I calculate days from today?
A: Yes, simply use today's date as either the start or end date.