# MONTHS\_AGO

### Description

`MONTHS_AGO` calculates the number of months that have passed since a specific date. The date can be either given as an information or a text in [ISO8601 format](https://docs.atfinity.io/rule-language/operators/date-operators/..#iso8601-format).

### Example

To check wether a case has been opened more than half a year ago, you could use this rule:

```
MONTH_AGO(CASE.created_at) >= 6
```