diff --git a/apps.json b/apps.json
index 15acb3b20..4f29159cb 100644
--- a/apps.json
+++ b/apps.json
@@ -508,6 +508,19 @@
       {"name":"sclock.img","url":"clock-simple-icon.js","evaluate":true}
     ]
   },
+  { "id": "dclock",
+    "name": "Dev Clock",
+    "icon": "clock-dev.png",
+    "version":"0.08",
+    "description": "A Digital Clock including timestamp (tst), beats(@), days in current month (dm) and days since new moon (l)",
+    "tags": "clock",
+    "type":"clock",
+    "allow_emulator":true,
+    "storage": [
+      {"name":"dclock.app.js","url":"clock-dev.js"},
+      {"name":"dclock.img","url":"clock-dev-icon.js","evaluate":true}
+    ]
+  },
   { "id": "gesture",
     "name": "Gesture Test",
     "icon": "gesture.png",
diff --git a/apps/dclock/ChangeLog b/apps/dclock/ChangeLog
new file mode 100644
index 000000000..6582ec16e
--- /dev/null
+++ b/apps/dclock/ChangeLog
@@ -0,0 +1,8 @@
+0.01: branched from simple clock and added seconds
+0.02: add timestamp (tst)
+0.03: fix timestamp round to whole number
+0.04: add iso datetime and move day of the week (d) / month names (m)
+0.05: add beats (@)
+0.06: tidy up
+0.07: add days in current month (md) and days since new moon (l)
+0.08: update icon
\ No newline at end of file
diff --git a/apps/dclock/clock-dev-icon.js b/apps/dclock/clock-dev-icon.js
new file mode 100644
index 000000000..f36dcaee3
--- /dev/null
+++ b/apps/dclock/clock-dev-icon.js
@@ -0,0 +1 @@
+require("heatshrink").decompress(atob("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"))
\ No newline at end of file
diff --git a/apps/dclock/clock-dev.js b/apps/dclock/clock-dev.js
new file mode 100644
index 000000000..39f031fcc
--- /dev/null
+++ b/apps/dclock/clock-dev.js
@@ -0,0 +1,111 @@
+/* jshint esversion: 6 */
+const timeFontSize = 4;
+const dateFontSize = 3;
+const smallFontSize = 2;
+const font = "6x8";
+
+const xyCenter = g.getWidth() / 2;
+const yposTime = 50;
+const yposDate = 85;
+const yposTst = 115;
+const yposDml = 170;
+const yposDayMonth = 195;
+const yposGMT = 220;
+
+// Check settings for what type our clock should be
+var is12Hour = (require("Storage").readJSON("setting.json",1)||{})["12hour"];
+
+function getUTCTime(d) {
+  return d.toUTCString().split(' ')[4].split(':').map(function(d){return Number(d)});
+}
+
+function drawSimpleClock() {
+  // get date
+  var d = new Date();
+  var da = d.toString().split(" ");
+  var dutc = getUTCTime(d);
+
+  g.reset(); // default draw styles
+  // drawSting centered
+  g.setFontAlign(0, 0);
+
+  // draw time
+  var time = da[4].split(":");
+  var hours = time[0],
+    minutes = time[1],
+    seconds = time[2];
+
+  var meridian = "";
+  if (is12Hour) {
+    hours = parseInt(hours,10);
+    meridian = "AM";
+    if (hours == 0) {
+      hours = 12;
+      meridian = "AM";
+    } else if (hours >= 12) {
+      meridian = "PM";
+      if (hours>12) hours -= 12;
+    }
+    hours = (" "+hours).substr(-2);
+  }
+
+  // Time
+  g.setFont(font, timeFontSize);
+  g.drawString(`${hours}:${minutes}:${seconds}`, xyCenter, yposTime, true);
+  g.setFont(font, smallFontSize);
+  g.drawString(meridian, xyCenter + 102, yposTime + 10, true);
+
+  // Date String
+  g.setFont(font, dateFontSize);
+  g.drawString(`${d.getFullYear()}-${d.getMonth()+1}-${d.getDate()}`, xyCenter, yposDate, true);
+
+  // Timestamp
+  var tst = Math.round(d.getTime());
+  g.setFont(font, smallFontSize);
+  g.drawString(`tst:${tst}`, xyCenter, yposTst, true);
+
+  //Days in month
+  var dom = new Date(d.getFullYear(), d.getMonth()+1, 0).getDate();
+
+  //Days since full moon
+  var knownnew = new Date(2020,02,24,09,28,0);
+
+  // Get millisecond difference and divide down to cycles
+  var cycles = (d.getTime()-knownnew.getTime())/1000/60/60/24/29.53;
+
+  // Multiply decimal component back into days since new moon
+  var sincenew = (cycles % 1)*29.53;
+
+  // Draw days in month and sime since new moon
+  g.setFont(font, smallFontSize);
+  g.drawString(`md:${dom} l:${sincenew.toFixed(2)}`, xyCenter, yposDml, true);
+
+  // draw Month name, Day of the week and beats
+  var beats = Math.floor((((dutc[0] + 1) % 24) + dutc[1] / 60 + dutc[2] / 3600) * 1000 / 24);
+  g.setFont(font, smallFontSize);
+  g.drawString(`m:${da[1]} d:${da[0]} @${beats}`, xyCenter, yposDayMonth, true);
+
+  // draw gmt
+  var gmt = da[5];
+  g.setFont(font, smallFontSize);
+  g.drawString(gmt, xyCenter, yposGMT, true);
+}
+
+// handle switch display on by pressing BTN1
+Bangle.on('lcdPower', function(on) {
+  if (on) drawSimpleClock();
+});
+
+// clean app screen
+g.clear();
+Bangle.loadWidgets();
+Bangle.drawWidgets();
+
+// refesh every 100 milliseconds
+setInterval(drawSimpleClock, 100);
+
+// draw now
+drawSimpleClock();
+
+// Show launcher when middle button pressed
+setWatch(Bangle.showLauncher, BTN2, {repeat:false,edge:"falling"});
\ No newline at end of file
diff --git a/apps/dclock/clock-dev.png b/apps/dclock/clock-dev.png
new file mode 100644
index 000000000..0cfbff44c
Binary files /dev/null and b/apps/dclock/clock-dev.png differ