The current time, according to your browser.

Essentially, this clock counts-up based on hours, rather than seconds and minutes. We already use fractions like "half" (0.5) or a "quarter" (0.25) of an hour - so why not decimals? Instead of minutes, seconds and milliseconds, the clock is displaying 6 decimal-places of an hour, such that the 6th digit is 1,000,000th of an hour (3.6ms).
This isn't useful for communicating a meeting time, but it is useful for tracking how long something takes - mainly because you're keeping track of a single number instead of three or four. This specific implementation is based upon UNIX Epoch timestamp, but the hour is grabbed separately from your browser because I'm not dealing with time zones (I'm sorry if your time-zone is fractional).  Pssst: If you click the value, it'll copy to your clipboard!