How can i translate months into another language?
Please take a look at the Localization topic in the documentation:
https://doc.daypilot.org/month/localization/
You can use one of the predefined locales or you can define your own.
In addition to switching the locale you can also customize the cell HTML using onBeforeCellRender event handler: https://doc.daypilot.org/month/cell-customization/