Hi Phil,
Thanks for contacting Syncfusion support.
We have processed all the Date and Time values as UTC at both server and client end. You can find the pros of using this approach in the below link.
If you are facing any difficulties in using our controls, kindly share us more details on your application requirement, the issue you are facing while handling date in our control. So that we can investigate further and provide you a prompt solution to resolve the issue at the earliest.
Regards,
Deepa L.