| Clue | Source | Date |
|---|---|---|
| Sundial readout | Universal | 28 Aug 2023 |
| Astronomer's calculation | New York Times | 08 Apr 2023 |
| Its main unit is the day | Wall Street Journal | 01 Mar 2021 |
| Reckoning via sundial | Newsday | 17 Nov 2019 |
| Reckoning via sundial, for example | Newsday | 28 Jul 2016 |
| Sundial indication |