1They are working on it night and day, seven days a week.
2His sense of time was gone; night and day were merged now.
3Was he always there, night and day, just in case someone arrived?
4They are now busy volunteering on Covid-19 support activities night and day.
5After travelling night and day, he came in sight of a city.
6Bonaparte exerted himself night and day in the execution of his projects.
7The army continued its march, night and day, until it reached Baghdad.
8I will marry him; I will think of him night and day.
9We had men in plain clothes watching the house night and day.
10The sound of the Marseillaise rang through the streets, night and day.
11The battle of the Somme still grumbled night and day behind them.
12He slept in his room and watched over him night and day.
13When she's working on something, she's immersed in it night and day.
14Up there at all times of night and day, in all weathers.
15For the disciples it had been a night and day of wonders.
16And the prayers of Christian England were with them night and day.