MicroCalendar - Windows Tray Calendar 1.3.2.9   
by C. McNutt   

MicroCalendar is a Windows system tray popup calendar. It is small, unobtrusive, and always ready so you can easily check calendar dates without messing up your computer's system time or having to use a resource-intensive application. Features an attractive user interface, a tray icon that shows today's date, displayable week numbers, copy-date-to-clipboard, and form persistence (remembers where you put it last on your screen).

This calendar doesn't contain any extra, unneeded features to clutter it up or weigh your computer down; no journal, no scheduling, appointments, or alarms -- it's JUST a reference calendar, elegant and simple.