Clock
This clock is running at *approximately* real time (i.e. 1 second per second).
BUT - this is likely to depend on your browser/computer performance (which may slow it down). Don't rely on it to keep perfect time, but it's a useful demonstration tool.
You can drag the end of the hour hand to adjust the time, or type the time (in hours between 0 and 12) in the input box at the bottom. For example, to get 06:30, type "6.5" - 6 and a half - in the box, or to get 12:45 type "0.75" - zero and 3 quarters.