Calendar configure month and days of week.

And last but not least, I added two componentes on Page 1

Both are trying to server the same purpose, pick date of birth, but cant configure months names for another language.

Same with the Calendar one, can't configure month names and days of week.

Unfortunately, it is not possible to translate the month and day of the week in Date Picker. I would suggest you use Localized Calendar so you can translate the month and day names.

https://www.jotform.com/widgets/localized-calendar