# Overview of Time Calculator

A time calculator is a perfect resource for time related calculation such as time difference and adding or subtracting time durations.

Here are some functionalities that a time calculator might provide:

### Time Difference:

Calculate the difference between two given times (e.g., start and end time) to find the duration.

### Time Addition:

Add time durations to calculate total time (for example, adding work hours from different days).

### Time Subtraction:

Subtract time duration from a given time to calculate a new time (e.g., calculating an end time from a start time and duration).

### Future or Past Time Calculation:

Calculate a future or past time based on a given start time and a specified duration (e.g., finding what time it will be in 3 hours).

## What are we expecting from this tool?

When the calculator performs operations involving days, months, and years, it needs to consider different factors for each unit of time.

### Days:

- A time calculator can calculate the difference in days between two dates or times and add or subtract several days from a given date.
- After adding or subtracting days from a given date, the tool will produce a result that indicates the total number of days between two dates or a new date.

### Months:

- Calculating the difference in months requires considering the different number of days in each month.
- The tool can return the difference in months as a whole number or a fraction or create a new date by adding or subtracting a specified number of months from an existing date.

### Years:

- Calculating the difference in years between two dates is similar to calculating months but on a much larger scale.
- The tool will show the difference in years as a whole number or fraction or generate a new date by adding or subtracting a specified number of years from a given date.

## Why Does This Tool Matters?

A time calculator aims to provide accurate, efficient, and user-friendly tools for managing and calculating time-based information. This enables users to save time, reduce errors, and improve their productivity and planning skills. Here are some purposes that a time calculator might provide

- Calculates the start and end times of events, meetings, and tasks to assist users in planning their schedules.
- Helps with event planning by determining the time and date difference.
- Users can keep track of their working hours and manage their time efficiently.
- Enables users to add or subtract durations from specific times to plan events more effectively.