# j.Invalid Dates

{% hint style="success" %}
**Supported in:✔️**Slider Calendar ❌Year **❌**Multi Year**✔️**Month **✔️**Month Range **❌**Week **❌**Day
{% endhint %}

The **Invalid Date Handling** feature in Super Filter allows users to customize the appearance of dates that are not available in the data model. 

Follow these steps to enable and configure this feature:

{% stepper %}
{% step %}
Open the **Format Visual** and navigate to **Date Filter → Calendar → Invalid Date**.
{% endstep %}

{% step %}
Enable the **Invalid Date** toggle option.
{% endstep %}

{% step %}
Once enabled, the following formatting options are available for customization:

* **Strikethrough:** Adds a line through the invalid dates.
* **Italicize:** Displays invalid dates in italicized text.
* **Invalid Date Background Color:** Highlights invalid dates by applying a background color.
* **Invalid Date Text Color:** Displays invalid dates with a specific text color.
  {% endstep %}
  {% endstepper %}

By enabling this feature, users can visually differentiate invalid dates in the calendar, making it easier to identify and handle them.

<figure><img src="https://2237530339-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FPIvQSuyE40UC9wv5uGgW%2Fuploads%2FrU9VhPw7LJotPK4Z5y71%2FScreenshot%202025-01-20%20210027.png?alt=media&#x26;token=f59ae44a-71ff-4023-a5a5-31c172cd52bd" alt="" width="527"><figcaption><p>Image 1: Invalid Dates striked out and italicised to higlight.</p></figcaption></figure>