Hi @Dougers1,
Please check the following steps:
1). Please select the date formate as ISO8601 as below:

2). Then in the email body tab, please formate the date time as below:
formatDateTime(items('Apply_to_each')?['YourDateField'], 'dd-MM-yyyy')
formatDateTime(items('Apply_to_each')?['YourTimeField'], 'hh:mm:ss')
If it does not solve your problem, please show me your excel date time configuration.