1. What is the Days Until Calculator?

The Days Until Calculator calculates the number of days between two dates, showing either how many days remain until a future date or how many days have passed since a past date.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• Target Date — The future or past date you're calculating towards
• Current Date — The reference date (defaults to today)

Explanation: The calculator computes the exact number of days between two dates, accounting for leap years and different month lengths.

3. Importance of Date Calculation

Details: Calculating days between dates is essential for project planning, event countdowns, tracking deadlines, and historical date analysis.

4. Using the Calculator

Tips: Enter the target date (the date you're counting to/from) and optionally change the current date if you want to calculate from a date other than today.

5. Frequently Asked Questions (FAQ)

Q1: Does this include both start and end dates in the count?
A: No, it calculates the days between the two dates (exclusive of either date).

Q2: How accurate is this calculator?
A: It's completely accurate, accounting for leap years and all calendar variations.

Q3: Can I calculate days from past dates?
A: Yes, the calculator will show negative numbers for past dates.

Q4: What's the maximum date range this can handle?
A: The calculator can handle any dates within the range supported by PHP's DateTime class (roughly 1901-2038 on 32-bit systems, much wider on 64-bit).

Q5: Can I use this for business days calculation?
A: This calculates calendar days. For business days (excluding weekends/holidays), you would need a more specialized calculator.