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$ dotnet add package UmbTimeOnlyA simple dropdown property editor for picking the time only. It is based on .NET's TimeOnly.
Though simple, this is how the inital state of the property editor:

Clicking the clock icon provides a dropdown that let's you select the time.

If you want to use the current time, you can click the button with that name to get it right away.
This shows the property editor before clicking Current Time:

This shows the property editor after clicking Current Time:

An example of how to use this property editor in code.
Here we check if the time is before or after the time that is picked in the editor:

Having picked 12:11:31 this is the output:
