On 1st September 1939, the United Kingdom began the blackout that lasted throughout World War Two. In Northern Ireland, the Royal Ulster Rifles mobilised.
On 2nd September 1945, World War Two ended with the Japanese surrender. This day in history saw crashed and medal presentations throughout Northern Ireland.
On 3rd September 1939, Britain declared war on Germany. Within hours, German submarine U-30 sank SS Athenia in the Atlantic killing 117 passengers and crew.
On 4th September 1939, Ian Edward Maitland Borley became one of the first casualties of World War Two. At the same time, Ulster MPs pledged their support.
On 5th September 1939, Polish pilot Sergeant R Sadowski of RAF 315 Squadron crashed his Mark V Supermarine Spitfire at Ballyhalbert Airfield, Co. Down.
Throughout wartime, many personnel from Northern Ireland died on 6th September between 1939 and 1945 including many airmen serving in the Royal Air Force.
The Second World War lasted between September 1939 and September 1945. We remember those who died as a result of the conflict on 7th September in each year.
On 8th September 1942, USAAF Composite Command took control of Long Kesh Airfield. Across Ulster, many other events took place on this day through wartime.
On 9th September 1943, a young Polish airman crashed his Supermarine Spitfire at Ballyhalbert Airfield, Co. Down and escaped uninjured from the wreckage.
Gibraltar National Day occurs each year on 10th September. Towards the end of World War Two, thousands of evacuees from The Rock came to Northern Ireland.
On 11th September we remember those in or from Northern Ireland who died during the Second World War on this day in history between 1939 and 1945.
On 12th September we remember those in or from Northern Ireland who died during the Second World War on this day in history between 1939 and 1945.
13th September is a memorable date in wartime history in Northern Ireland from the first bombs of 1940 to Monty's celebratory arrival in Ulster in 1945.
On 14th September we remember those in or from Northern Ireland who died during the Second World War on this day in history between 1939 and 1945.
15th September marks Battle of Britain Day. We remember those with connections to Northern Ireland who made up part of the Royal Air Force's squadrons.
On 16th September, we remember those from Northern Ireland who died in World War Two at locations as far-flung as Normandy, Italy, North Africa, and Burma.