# How do I change the date format, time format and time zone?

These settings are in **Profile → Preferences**.

1. Click the **SILAB logo** at the top right, then **Profile**.

   ![Opening the profile](../../../../../assets/articles/modifier-format-date-lheure-et-fuseau-horaire/1.png)

2. Open the **Preferences** tab.

   ![Preferences tab](../../../../../assets/articles/modifier-format-date-lheure-et-fuseau-horaire/2.png)

3. Choose the **date format**, the **time format** and the **time zone**.

   ![Date format, time format and time zone settings](../../../../../assets/articles/modifier-format-date-lheure-et-fuseau-horaire/3.png)

4. Click **Save**.

   ![Save button of the preferences](../../../../../assets/articles/modifier-format-date-lheure-et-fuseau-horaire/4.png)