**Introduction**

Calculating the duration between two dates or times can be a crucial task in various situations. Whether you are managing projects, planning events, or simply curious about the time elapsed, a Day Hour Calculator can be a handy tool. In this article, we will provide you with a functional calculator code using HTML and JavaScript, along with explanations on its usage and the underlying formula.

**How to Use**

To utilize the Day Hour Calculator, follow these simple steps:

- Input the start date and time.
- Input the end date and time.
- Click the “Calculate” button.

The result will be displayed instantly, showing the duration in days and hours.

**Formula**

The accurate formula for calculating the duration between two timestamps is:

Duration (in hours)=(End Date−Start Date)×24

This formula takes into account both the date and time components to provide a precise result.

**Example**

Suppose you want to find the duration between January 1, 2023, 12:00 PM, and January 5, 2023, 6:30 AM. Using the formula:

$Duration=(2023/01/0506:30−2023/01/0112:00)×24$

The result will be displayed as days and hours.

**FAQs**

**Q1: What date and time format should I use?**

**A1:** Input the dates and times in the format YYYY/MM/DD HH:mm for accurate calculations.

**Q2: Can I calculate durations across different months or years?**

**A2:** Yes, the calculator considers both date and time components, allowing calculations spanning various time intervals.

**Q3: Is the result rounded off to the nearest hour?**

**A3:** No, the calculator provides a precise result, including fractional hours.

**Conclusion**

In conclusion, the Day Hour Calculator presented here is a powerful tool for anyone needing accurate duration calculations. Its simplicity and precision make it ideal for a variety of applications, from project management to personal timekeeping.