Definition of "day-and-night" [day-and-night]

• Same as around-the-clock. (adjective)

Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)

• "I thought about day-and-night rhythms of the body that I know nothing about, but I also wondered when the missile strike occurred, and what was he doing at that minute."
• "The 10 best day-game teams in baseball history, and the teams with the biggest differential between day-and-night success, have two things in common: first, they are generally very strong teams, with good pitching but dominant, veteran offenses—offenses that hit better during the day than at night."
• "And then there is the relentless day-and-night news agenda, the morale-sapping personal scrutiny and the basic level of political debate in which, at Westminster, "calm down, dear" can be hailed as a side-splitting example of Commons repartee."