---
title: Day
slug: neurons-for-itsm/admin-user-help/enu/latest/day
createdAt: 2026-07-14T19:16:24.186Z
---

Returns the UTC date and time interval of the entire day that is the number of days specified earlier than or later than the specified date and time.

## Syntax

`Day(numDays, baseDateTime, timeZone)`

## Enabled For

For a description of the business object categories, see [Notes on "Enabled For"](docId\:u26v9feCFs6iLwA0-PVJd).

| Business Object Category                                                                    | Yes/No |
| ------------------------------------------------------------------------------------------- | ------ |
| Business Rules: Before-Save Rules                                                           | Yes    |
| Business Rules: Calculation Rules (After Save, with or without Also Recalculate on Load)    | Yes    |
| Business Rules: Calculation Rules (Before Save or Always, without Also Recalculate On Load) | Yes    |
| Business Rules: Calculation Rules (Before Save or Always, with Recalculate On Load)         | Yes    |
| Business Rules: Editing Rules                                                               | Yes    |
| Business Rules: Initialization Rules                                                        | Yes    |
| Business Rules: Read Only Rules                                                             | Yes    |
| Business Rules: Required Rules                                                              | Yes    |
| Business Rules: Validation Rules                                                            | Yes    |
| Client Expressions                                                                          | Yes    |
| Object Permissions                                                                          | Yes    |
| Services                                                                                    | Yes    |
| LDAP                                                                                        | Yes    |
| Mobile                                                                                      | Yes    |
| Quick Actions (except UI Quick Actions)                                                     | Yes    |
| UI Quick Actions                                                                            | Yes    |
| Reports                                                                                     | Yes    |
| Search/Dashboard without field references                                                   | Yes    |
| Search/Dashboard with field references                                                      | Yes    |

## Parameters

| Parameter    | Description                                                                                                                                                                                                                                                                                                                                                                         |
| ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| numDays      | (Optional) The number of days before or after the date and time specified by the **baseDateTime** parameter. If not specified or 0, uses the interval containing the date and time specified by the **baseDateTime** parameter. Can be either a positive integer, to indicate days after the default interval, or a negative integer, to indicate days before the default interval. |
| baseDateTime | (Optional) The base date for the function. If not specified, uses the default date which is the current date and time.                                                                                                                                                                                                                                                              |
| timeZone     | (Optional) The time zone, in IANA format.                                                                                                                                                                                                                                                                                                                                           |

## Returns Value

DateTime interval in UTC time.

## Example

`$(Day(4))`

:::Paragraph{indent="1"}
If today is April 10, 2014, this function returns the DateTime interval of the entire local day of April 14, 2014 (4 days after April 10, 2014).
:::

`$(Day(-4))`

:::Paragraph{indent="1"}
If today is April 10, 2014, this function returns the DateTime interval of the entire local day of April 6, 2014.
:::

`$(Day(10, mydate))`

:::Paragraph{indent="1"}
If the value of the **mydate** parameter is anytime during April 10, 2014, this function returns the DateTime interval of the entire local day of April 20, 2014.
:::

`$(Day(-4, Now(), "Africa/Cairo"))`

:::Paragraph{indent="1"}
If today is April 10, 2014, this function returns the DateTime interval of the entire local day of April 6, 2014 in the Africa/Cairo time zone.
:::