In your kendo.all.min.js script file, find:
calendars:{standard:{days:{names:["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"]
and change Sunday to the end of the list, for example:
calendars:{standard:{days:{names:["Monday","Tuesday","Wednesday","Thursday","Friday","Saturday", "Sunday"]
Do the same for short names, right after the "calendars" part in the script
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