Hi Julie,
Thank you for your interest in Syncfusion Products.
"dateTimePickerAdv1_Calendar_TodayButton_Click" event get triggered when we click the Today button in the Calender of the DateTimePickerAdv. Please refer to the following code snippets and the sample that ilustrates this.
private void dateTimePickerAdv1_Calendar_TodayButton_Click(object sender, EventArgs e)
{
MessageBox.Show("Today Button is clicked");
}
http://websamples.syncfusion.com/samples/Tools.Windows/F76619/main.htmPlease let me know if this helps you.
Regards,
Fathima