| Regimental number | 2705 |
| Date of birth | 28 October 1895 |
| Place of birth | Brunswick, Victoria |
| School | Brunswick State School |
| Religion | Church of England |
| Occupation | Labourer |
| Address | 92 Wilson Street, Brunswick, Victoria |
| Marital status | Married |
| Age at embarkation | 23 |
| Next of kin | Wife, Mrs I M Day, 92 Wilson Street, Brunswick, Victoria |
| Enlistment date | 24 June 1915 |
| Date of enlistment from Nominal Roll | 24 June 1915 |
| Rank on enlistment | Private |
| Unit name | 7th Battalion, 8th Reinforcement |
| AWM Embarkation Roll number | 23/24/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A68 Anchises on 26 August 1915 |
| Rank from Nominal Roll | Lance Corporal |
| Unit from Nominal Roll | 7th Battalion |
| Fate | Returned to Australia 21 March 1919 |
| Family/military connections | Brothers: 2077 Private Herbert DAY, 44th Battalion, 3rd Reinforcement, Died of Wounds 11 June 1917, France; Tom DAY, AIF; Albert DAY, Navy. |
| Date of death | 26 June 1974 |
| Place of burial | Cremated at Springvale, Victoria |