Hey Aakash,
thanks for the reply! I think you missunderstood my request.
I did select the timestamp from the calendar

This was not manually entered. When the OS / Browser Locale is set to “de_AT” (german, austria or germany) then the string “Januar” is placed in the countdown field after selecting a value in the calendar 🙂
I think the calendar generates the timestamp based on the current locale, maybe it can be fixed to YYYY-MM-DD in the code