Depending on your office hours, you may want to change the hours your calendar displays on the Dashboard
How to change the begin and end times on your Dashboard calendar view:
1. On your Dashboard, click the “My Settings & Preferences” button in the toolbar.
2. Navigate to “ My Calendar Settings”.
3. Change the values for “Calendar Agenda View Starts at” and “Calendar Agenda View Ends at" to the times you prefer.
4. Be sure to click the “Save Settings” button when finished.
Your Dashboard calendar begin and end time should now be updated. If not, simply logout and log back in to have the new settings take effect.