BangleApps/apps/digiclock/digiclock.js

//load fonts
require("Font7x11Numeric7Seg").add(Graphics);
require("FontHaxorNarrow7x17").add(Graphics);
//screen position
const X = 170;
const Y = 140;

function draw() {
  // Date Variables
  var date = new Date();
  var h = date.getHours();
  var m = date.getMinutes();
  var day = require("locale").dow(date);
  var month = require("locale").month(date,1);
  var dateNum = date.getDate();
  var year = date.getFullYear();
  var half = "AM";
  var time = (" " + h).substr(-2) + ":" + ("0" + m).substr(-2);

  if (h > 12) {
    half = "PM";
    h = h - 12;
  }
  //reset graphics
  g.reset();
  //draw the time
  g.setFont("7x11Numeric7Seg", 5);
  g.setFontAlign(1,1);
  g.drawString(time, X, Y, true /*clear background*/);
  g.setFont("7x11Numeric7Seg", 3);
  g.drawString(("0"+date.getSeconds()).substr(-2), X+50, Y, true /*clear background*/);
  g.setFontAlign(0,1);
  g.setFont("HaxorNarrow7x17", 2);
  g.drawString(half, X+30, Y-35, true);
  g.setFont("HaxorNarrow7x17", 3);
  g.drawString(day, X-60, Y+53, true);
  g.drawString(month, X-100, Y+95, true);
  g.drawString(dateNum, X-40, Y+95, true);
  g.drawString(year, X-90, Y-55, true);


}

//clear screen at startup
g.clear();
//draw immediatly
draw();

var secondInterval = setInterval(draw, 1000);
// Stop updates when LCD is off, restart when on
Bangle.on('lcdPower',on=>{
  if (secondInterval) clearInterval(secondInterval);
  secondInterval = undefined;
  if (on) {
    secondInterval = setInterval(draw, 1000);
    draw(); // draw immediately
  }
});

// Show launcher when button pressed
Bangle.setUI("clock");
Bangle.loadWidgets();
Bangle.drawWidgets();