Formula (Extended): $DATETIME Function
## Overview
Calculate the date and time for the specified year, month, day, hour, minute, and second.
## Syntax
```
$DATETIME(Year,Month,Day,Hour,Minute,Second)
```
## Parameters
|Parameter|Type|Required|Description|
|:---|:---|:---|:---|
|Year|4-digit half-width numerical value|Required|Specify 1900 or higher. An error occurs if the number is less than 1900. An error occurs if the string is not a half-width numerical value. |
|Month|Half-width numeric value|Required|If a value other than 1 to 12 is entered, the past or future month is calculated using the input value. An error occurs if the string is not a half-width numeric value. A blank is considered to be 0. |
|Day|Half-width numeric value|Required|If a value other than 1 to 31 is entered, the past or future day is calculated using the input value. An error occurs if the string is not a half-width numeric value. A blank is considered to be 0. |
|Hour|Half-width numeric value|Required|If a value other than 1 to 23 is entered, a past or future date will be calculated using the entered value. An error occurs if a string other than a half-width numeric value is entered. A blank is considered to be 0. |
|Minute|Half-width numeric value|Required|If a value other than 1 to 59 is entered, a past or future date will be calculated using the entered value. An error occurs if a string other than a half-width numeric value is entered. A blank is considered to be 0. |
|Second|Half-width numeric value|Required|If a value other than 1 to 59 is entered, a past or future date will be calculated using the entered value. An error occurs if a string other than a half-width numeric value is entered. A blank is considered to be 0. |
### Column Usable as Parameters
|Parameter|Classification|Numeric Value|Date|Description|Check|
|:---|:---|:---|:---|:---|:---|
|Year|Yes|Yes|No|Yes|No|
|Month|Yes|Yes|No|Yes|No|
|Day|Yes|Yes|No|Yes|No|
|Hour|Yes|Yes|No|Yes|No|
|Minute|Yes|Yes|No|Yes|No|
|Second|Yes|Yes|No|Yes|No|
## Return Value
Date and time in yyyy/MM/dd hh:mm:ss format.
### Return Value Display Content
|Target|Display Content of Return Value|
|:---|:---|
|Classification (including title, status, manager, owner)|Display return value. |
|Numeric Value (including work volume, progression rate, remaining work volume)|Do not display. |
|Date (including start and completion)|Display return value. |
|Description (including content)|Display return value. |
|Check (including lock)|Do not display. |
## Usage Example ①
Specify parameters by screen column name (name displayed)
### Calculation formula

### Parameters

### Calculation Result

## Usage Example ②
When month is 0
### Parameters

### Calculation Result

## Usage Example ③
When the day is a negative value
### Parameters

### Calculation Result

## Usage Example ④
When the hour is greater than 23
### Parameters

### Calculation Result

## Usage Example ⑤
When minutes is a negative value
### Parameters

### Calculation Result
