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To build on F. McLion's reply, if you see this tiny icon in the upper-left of the Metadata panel:

you're in "edit-only" mode, in which the panel only displays fields that can be edited and are empty. Click the icon to switch it to view-and-edit-mode, and it will appear as a sort-of-kind-of eyeball:

When you have the Default tagset selected, by default you'll only see Capture Date selected. Click the Customize button to also display Capture Time:

When you have the EXIF tagset selected, both Capture Date and Capture Time will display by default:
