- Clio Manage
While Clio doesn't have functionality to do this, this solution will provide a shortcut for most of the date.
Consider looking for other copy/paste or clipboard manager apps which may offer this functionality
- Create a Text Snippet with the year and month, e.g. 2018-05-
- When entering text, enter the shortcut for the snippet and then type the day, e.g. 2018-05-25
- Once a month, update the snipped to the current month