| Clue | Source | Date |
|---|---|---|
| 605, in Roman numerals | Newsday | 02 Mar 2022 |
| 605, in old Rome | Eugene Sheffer | 17 Apr 2019 |
| 605, to Seneca | The Washington Post | 20 Mar 2018 |
| 605, to Seneca | LA Times Daily | 20 Mar 2018 |
| 605, in ancient Rome | New York Times | 20 Nov 2017 |
| 605, in ancient Rome | ||
| LV × XI | ||
| Early seventh-century year | ||
| V x XI x XI | ||
| V x XI x XI | ||
| Five-ninths of MLXXXIX | ||
| XI x LV | ||
| XI x LV | ||
| One-fifth of MMMXXV | ||
| Year in Sabinianus' reign | ||
| Year in Sabinianus' reign | ||
| 605 to Caesar | ||
| 605, in Roman numerals | ||
| Seventh-century date | ||
| 605, to Cicero | ||
| Early 7th-century year | ||
| 605, to Cato | ||
| CXXI times V | ||
| Dark Ages date | ||
| 605. |