> For the complete documentation index, see [llms.txt](https://docs.emobiq.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emobiq.com/emobiq-client/006-actions-and-visual-logic/action-reference/react-native/datetime/update.md).

# update

## Description

Allows users to add days, hours, minutes and seconds to a certain date.

## Input / Parameter

| Name       | Description                                        | Input Type | Default             | Options                                                                | Required |
| ---------- | -------------------------------------------------- | ---------- | ------------------- | ---------------------------------------------------------------------- | -------- |
| date       | The reference date to be updated.                  | Text       | -                   | -                                                                      | Yes      |
| dateFormat | The date and/or time format to use.                | Text       | yyyy-MM-dd HH:mm:ss | yyy-MM-dd HH:mm:ss, yyyy-MM-dd, HH:mm:ss, y, M, d, h, H, m, s, S, E, z | No       |
| value      | The value to be added to the date.                 | Number     | -                   | -                                                                      | Yes      |
| interval   | The type of time interval to be added to the date. | Text       | Days                | Days, Years, Months, Weeks, Hours, Minutes, Seconds                    | No       |

### Supported date pattern letters

#### Years:

* `YYYY`: 4-digit year (e.g., 2021)
* `YY`: 2-digit year (e.g., 21 for 2021)

#### Months:

* `MMMM`: Full month name (e.g., January, February)
* `MMM`: Short month name (e.g., Jan, Feb)
* `MM`: Month as a 2-digit number (01 for January)
* `M`: Month as a number (1 for January)

#### Days:

* `DD`: Day of the month as a 2-digit number (e.g., 09)
* `D`: Day of the month as a number (e.g., 9)
* `dddd`: Full day name (e.g., Monday, Tuesday)
* `ddd`: Short day name (e.g., Mon, Tue)

#### Hours:

* `HH`: Hours (24-hour clock) as a 2-digit number
* `H`: Hours (24-hour clock) as a number
* `hh`: Hours (12-hour clock) as a 2-digit number
* `h`: Hours (12-hour clock) as a number

#### Minutes:

* `mm`: Minutes as a 2-digit number
* `m`: Minutes as a number

#### Seconds:

* `ss`: Seconds as a 2-digit number
* `s`: Seconds as a number

#### AM/PM:

* `A`: AM/PM uppercase
* `a`: am/pm lowercase

#### Time Zone:

* `Z`: UTC offset (e.g., +07:00)
* `ZZ`: UTC offset in a compact format (e.g., +0700)

## Output

| Description                                                               | Output Type |
| ------------------------------------------------------------------------- | ----------- |
| Returns the updated date including the type of time interval(s) selected. | Text        |

## Example

In this example, we will add 1 day to a date and print the updated date in the console.

### Step

1. Drag a `button` component into the canvas and open the `Action` tab. Select the `press` event of the button and drag the `Log.write` function to the event flow.
2. Call the function `DateTime.update` inside the `Log.write` function.
3. Sample parameters are shown in the picture below.

   ![](/files/UCuboCe6b01Mes4PZtKD)

### Result

1. The console will print the updated date.

   ![](/files/Zhlq2UfWxGXEACAtJ7Di)