I see. I did saw some debate about that but a week starts in Sunday or Monday never actually bothers me that much, and I use several different locales across devices, so I just go with whatever that requires the less effort from me.
The current locale parameter is actually used to translate the month and weekdays to the respectable language. I will consider that as a configurable parameter for future update but as this is quite a niche utility it's priority will not be very high.
