How do I change the language of the calendar?

How do i change the language of the calendar? I would like to translate it to portuguese, but I can't edit the options.

Thanks

I have checked your JotForm and see that the form is currently having only one language. In order to translate the fields, the form is required to have at least 2 languages. Please follow the steps below to display the calendar in Portuguese.

1. Since the form is having one language, please try setting English as the default form language and add Portuguese in the Translations by clicking on Edit.

2. Click on the Edit icon in the Translations window to add the translations as required.

3. Once the translations are set, the form should be displaying the translated text for date and calendar.

Hope this information helps! Please get back to us if you need any further assistance. We will be happy to help. 

Hello! Thanks for the answer, it seems like this will solve it. I can't find the Form Language button, though. 
Where is it? 
Thank you :)

Do you mean the add form language button?

Just go to your Settings>Form Setting and click show more options.

Then scroll down and find Translations and click edit.

In your edit settings, you can add a form language,

And when you have added a new language, a dropdown of available languages can be seen in the preview.

Hope this information helps.

Please let us know if your have questions.

Thank you.