Hi Gary,
Thank you for contacting Syncfusion support
We were unable to reproduce the issue at our end and have created a sample based on your requirement.
Please share the following information to find the cause of the issue.
1. Your system time zone.
2. Essential studio version and browser details.
3. An issue reproducing sample if possible or replicate the issue in the following sample.
Regards,
Jayaprakash K.