| Regimental number | 5677 |
| Place of birth | Drysdale, Victoria |
| Occupation | Porter |
| Address | 49 Gower Street, Kensington, Victoria |
| Marital status | Single |
| Age at embarkation | 18 |
| Next of kin | Father, Mr W R Day, 49 Gower Street, Kensington, Victoria |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 5th Battalion, 17th Reinforcement |
| AWM Embarkation Roll number | 23/22/3 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A14 Euripides on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 1st Pioneer Battalion |
| Fate | Returned to Australia |
| Family/military connections | Brothers: 785 Private Lancelot Edward DAY, 6th Battalion, returned to Australia, 5 February 1918; 925 Private Herbert William DAY, 58th Battalion, killed in action 27 March 1918, France. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |