| Clue | Source | Date |
|---|---|---|
| Awake past one's bedtime | Wall Street Journal | 10 Jun 2023 |
| Not in bed yet | LA Times Daily | 25 Sep 2022 |
| Not yet out | The New Yorker | 07 Oct 2019 |
| Not yet sleeping | The Washington Post | 21 May 2019 |
| Not yet sleeping | LA Times Daily | 21 May 2019 |
| Burning the midnight oil | New York Times | 31 Mar 2019 |
| Not yet sleeping | ||
| Burning the midnight oil | ||
| Not yet slumbering | New York Times | 02 Aug 2016 |
| Not yet slumbering | ||
| Suffering from insomnia, perhaps | ||
| Suffering from insomnia, perhaps | ||
| Battling insomnia | ||
| Not in bed yet | ||
| Not asleep yet |