0 the time in the evening when it becomes dark --
1 the time at the end of the day when it becomes dark --
I want us to consider what is reasonable and possible, which is to do it before the danger period of nightfall.
The coastguard alerted all ships in the area and mounted an air search, which was continued until nightfall.
That is the beginning of the rush hour, and the whole of the evening rush hour will therefore still take place after nightfall.
Somehow or other, before nightfall they have to be found accommodation for the night.
Let us support what the farmers practically can do, which is to sweep the road before nightfall.
The walk may take longer than anticipated and may not end before nightfall.
By nightfall the border was quiet except for occasional sniping.
We swept them all away for inspection, but by nightfall they were all back again.
