formula field to combine date and time into datetime?

I have a date field and a time field, and I’d like to combine them into a single ui-only datetime field with a formula, but I haven’t gotten very far.

{{date}} & {{time}} isn’t returning anything.

Matt,  can you tell me what kind of field that time field is?  Must not be standard salesforce, cuz they give you Date/Time fields…

Yes. It’s a string in the form “h:mm pm”. Coming from a rest model.

Matt:   Javascript concatenation code is   “+”   not &.    Such a little thing. 

The formula  {{CloseDate}} + {{Name}} worked fine for me. 

Arg! Thanks, Rob.