Is there a bug with setDate() ?

Thanks - I'll look into this... setTime was added more for the F4 devices where there's a full calendar internally though.

On the F103 the suggested way of keeping time is this: http://www.espruino.com/clock

  var Clock = require("clock").Clock;
  var clk=new Clock("Jun 23, 2014 12:18:02");

  // every time the button is pressed, print the current time..
  function doStuff() {
    var d=clk.getDate(); 
    print(d.toString()); 
  }

That doesn't involve using setTime, so should still work fine.