Possible Clues:

• Breakfast times
• They're between dawn and noon
• They get to twelve sad times, by the sound of them
• Times of day when people often drink coffee
• *Bright planet that's visible early on some days
• Instant calls blocked by new PM's predecessors
• Male snoring terribly -- more than once when he should be getting up?
• Dawn's finishing 15 across with son
• What's said to be grief's early periods
• AMs