### Clue: 72 hours or so ago, child born then has far to go (8)
### Answer: THURSDAY 
 ### Explanation: 72 hours or so ago, child born then has far to go (8)
This crossword being published in the Observer on Sunday, we have to set our calendar from that, even if not actually solving on that day. That then takes us to Thursday, and the appropriate line of the common version of the nursery rhyme "Monday's Child".