---
title: "QQ - How do I use the current date or time in expressions and calculations?"
slug: "qq-how-do-i-use-the-current-date-or-time-in-expressions-and-calculations"
updated: 2022-10-10T08:21:15Z
published: 2022-10-10T08:21:15Z
canonical: "docs.datajet.app/qq-how-do-i-use-the-current-date-or-time-in-expressions-and-calculations"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.datajet.app/llms.txt
> Use this file to discover all available pages before exploring further.

# QQ - How do I use the current date or time in expressions and calculations?

Use the Engineering | Expression Field **Date functions**

#### Use today() function to calculate days since an event.

Calculate days since [End Date].

Note: [End Date] is a date-time field, so the date() function is used to extract the date from the datetime.

DaysAgo = today() - date([end Date])

![](https://cdn.document360.io/73b6469b-c1e4-47e9-aa65-986c8ebd17ca/Images/Documentation/image-1665389931933.png)

![](https://cdn.document360.io/73b6469b-c1e4-47e9-aa65-986c8ebd17ca/Images/Documentation/image-1665389843905.png)