[feature]: Changing the start of the week

Is there an existing issue for this?

• I have searched the existing issues

Summary

Hey there,

I am very happy to use this tool thanks for the excellent work.

when I can select a date for pop-ups, the start of the week is always Sunday, but in some countries the week starts on Monday (don't ask me why). It would be good if you could change the start of the week in the settings.

Wishing you a fantastic day ahead!

Why should this be worked on?

Week Starting on Monday: This system is followed by most of Europe, as well as countries influenced by European culture. It includes countries like the United Kingdom, Germany, France, Italy, Spain, and many others. In total, there are about 160 countries where the week starts on Monday.

Week Starting on Sunday: This system is prevalent in many Middle Eastern and North American countries, as well as other regions. For example, the United States, Canada, Saudi Arabia, and Egypt start their week on Sunday. There are approximately 42 countries where the week starts on Sunday.

Source: ChatGPT