If you don’t want to install another piece of software to see today’s date in your menubar, you can add it manually in System Preferences.
1. In System Preferences, open International and go to the Formats tab.
2. Next to Dates, click the Customize button. Arrange your date in the format you want to appear on your menubar. Use the down arrows on each element to choose between formats (January, Jan, 01, 1, etc.) I chose ( Apr 28 ), as shown.
3. Now, select the entire date format and copy it to your clipboard (Cmd+A, Cmd+C). Hit OK.
4. Hit the Customize button next to Times. Choose the “Medium” format.
5. Paste the date format on your clipboard next to the time format, and hit OK. You’re done!