## Definition

The time that is short to almost zero is called instant, which means instant. The time interval can be regarded as a line segment, which must have a beginning and an end.

## Division

The moments are: the beginning of the first few seconds; the end of the first few seconds; the end of the first few seconds; the beginning of the next few seconds.

The time intervals are: within the first few seconds; within a few seconds; within the first few seconds; within the next few seconds; several to several seconds.

Time interval refers to the period of time between two different instants. The kinematics of a point uses the vector radius method, the rectangular coordinate method and the natural method to study the movement of a point with respect to a certain reference system, including the point The equations of motion, trajectories, speeds and accelerations.

Time interval generally corresponds to distance, displacement, and other process quantities.

## Function

### Algorithm

The following is the .net (C#) time difference algorithm, with relevant instructions.

///

/// Calculate the time interval between two dates /// undefinedundefinedundefinedundefined

### description

1.DateTime value The type represents a specific date and time from 0:00:00 on January 1, 0001 AD to 23:59:59 on December 31, 9999 AD. Therefore, you can use the DateTime value type to describe any time within the imaginary range. A DateTime value represents a specific moment

2. The TimeSpan value contains many properties and methods for accessing or processing a TimeSpan value

The following list covers some of them :

Add: Add to another TimeSpan value.

Days: Returns the TimeSpan value calculated in days.

Duration: Get the absolute value of TimeSpan.

Hours: Returns the TimeSpan value calculated in hours

Milliseconds: Returns the TimeSpan value calculated in milliseconds.

Minutes: Returns the TimeSpan value calculated in minutes.

Negate: Returns the opposite of the current instance.

Seconds: Returns the TimeSpan value calculated in seconds.

Subtract: Subtract another TimeSpan value from it.

Ticks: Returns the number of ticks of the TimeSpan value.

TotalDays: Returns the number of days represented by the TimeSpan value.

TotalHours: Returns the number of hours represented by the TimeSpan value.

TotalMilliseconds: Returns the number of milliseconds represented by the TimeSpan value.

TotalMinutes: Returns the number of minutes represented by the TimeSpan value.

TotalSeconds: Returns the number of seconds represented by the TimeSpan value.