How do I start the day of the week from Monday?

[LastSpirit]

Now the day of the week starts on Sunday

How do I start the day of the week from Monday?

[mlizandier]

Pass the prop firstDay={1}. I guess by default it is at 0.

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[cwtaras]

I've came across with the same problem in Agenda component. I've added firstDay=1, and didn't change the order of the short day names. But now, date of days are incorrect. Today is 1st of September Thursday but It looks like Friday in weekly view. How can i solve this?