Lilius will place date & time in your menu bar and will show drop-down calendar when you click on it.
1. Date & Time format is fully adjustable, including time, day, day of the week, year, month etc.
2. All events from you system Calendar are integrated and displayed as dot under each day including Google Calendar if you set up integration in System Preferences.
3. Once you click on one of days with events, Event List will open to the left of the calendar with your agenda for this day.
4. This version is free for use, but premium features will come later.