diff --git a/erpnext/manufacturing/doctype/production_order/production_order.js b/erpnext/manufacturing/doctype/production_order/production_order.js
index 502277bc97..f8bb99ebdb 100644
--- a/erpnext/manufacturing/doctype/production_order/production_order.js
+++ b/erpnext/manufacturing/doctype/production_order/production_order.js
@@ -7,6 +7,11 @@ $.extend(cur_frm.cscript, {
 		cfn_set_fields(doc, dt, dn);
 
 		this.frm.add_fetch("sales_order", "delivery_date", "expected_delivery_date");
+		
+		return this.frm.call({
+			doc: this.frm.doc,
+			method: "set_actual_dates"
+		});
 	},
 
 	before_submit: function() {
@@ -60,10 +65,14 @@ $.extend(cur_frm.cscript, {
 	bom_no: function() {
 		return this.frm.call({
 			doc: this.frm.doc,
-			method: "set_production_order_operations",
-			callback: function(r) {
-				if(!r.exc) refresh_field("operations");
-			}
+			method: "set_production_order_operations"
+		});
+	},
+	
+	planned_start_date: function() {
+		return this.frm.call({
+			doc: this.frm.doc,
+			method: "plan_operations"
 		});
 	},
 
diff --git a/erpnext/manufacturing/doctype/production_order/production_order.py b/erpnext/manufacturing/doctype/production_order/production_order.py
index 9ac1c4848a..83a7ff12ab 100644
--- a/erpnext/manufacturing/doctype/production_order/production_order.py
+++ b/erpnext/manufacturing/doctype/production_order/production_order.py
@@ -175,16 +175,17 @@ class ProductionOrder(Document):
 		self.calculate_operating_cost()
 
 	def plan_operations(self):
-		scheduled_datetime = self.planned_start_date
-		for d in self.get('operations'):
-			while getdate(scheduled_datetime) in self.get_holidays(d.workstation):
-				scheduled_datetime = get_datetime(scheduled_datetime) + relativedelta(days=1)
+		if self.planned_start_date:
+			scheduled_datetime = self.planned_start_date
+			for d in self.get('operations'):
+				while getdate(scheduled_datetime) in self.get_holidays(d.workstation):
+					scheduled_datetime = get_datetime(scheduled_datetime) + relativedelta(days=1)
 
-			d.planned_start_time = scheduled_datetime
-			scheduled_datetime = get_datetime(scheduled_datetime) + relativedelta(minutes=d.time_in_mins)
-			d.planned_end_time = scheduled_datetime
+				d.planned_start_time = scheduled_datetime
+				scheduled_datetime = get_datetime(scheduled_datetime) + relativedelta(minutes=d.time_in_mins)
+				d.planned_end_time = scheduled_datetime
 
-		self.planned_end_date = scheduled_datetime
+			self.planned_end_date = scheduled_datetime
 
 
 	def get_holidays(self, workstation):
@@ -208,7 +209,16 @@ class ProductionOrder(Document):
 				d.status = "Completed"
 			else:
 				frappe.throw(_("Completed Qty can not be greater than 'Qty to Manufacture'"))
-
+		
+	def set_actual_dates(self):
+		if self.get("operations"):
+			actual_date = frappe.db.sql("""select min(actual_start_time) as start_date, max(actual_end_time) as end_date from `tabProduction Order Operation`
+				where parent = %s and docstatus=1""", self.name, as_dict=1)[0]
+			self.actual_start_date = actual_date.start_date
+			self.actual_end_date = actual_date.end_date
+		else:
+			self.actual_start_date = None
+			self.actual_end_date = None
 
 @frappe.whitelist()
 def get_item_details(item):