Bangle.js time steadiness

Thought I would add some comments to help understanding the code.
I also added a couple of console.log() calls to print messages to the IDE.
If you connect to the IDE you should be able to see some messages when the code runs
This will tell you if it was able to extract the time from the GPS chip real time clock circuit.

setInterval(function() {

  // this is defines the GPS call back function
  Bangle.on("GPS",function cb(g) {
    Bangle.setGPSPower(0,"time");    // we got a response so turn off GPS power
    Bangle.removeListener("GPS",cb);  // unregister the callback function
    if (!g.time || (g.time.getFullYear()<2000) ||
       (g.time.getFullYear()>2200)) {
      // GPS receiver's time not set
      console.log("GPS real time clock is not set, use GPS info and get a fix");
    } else {
      // We have a GPS time. Set time
     var t = g.time.getTime()/1000;
      setTime(t);
      console.log("time set to " + t);
    }
  });  // this is the end of the GPS callback funtion

  Bangle.setGPSPower(1,"time");   //  power the GPS on, when GPS responds, callback is called
}, 60*60*1000);     //  run this once per hour, 3600 seconds in milli-seconds

But I can see that you added this code to your app ages ago.
Really interesting discussion regarding the accuracy of the RTC chip verses the one in the GPS.